diff --git a/include/mumlib/Audio.hpp b/include/mumlib/Audio.hpp
index a71d73f..2010fdc 100644
--- a/include/mumlib/Audio.hpp
+++ b/include/mumlib/Audio.hpp
@@ -8,6 +8,8 @@ namespace mumlib {
 
     constexpr int SAMPLE_RATE = 48000;
 
+    class MumlibException;
+
     class AudioException : public MumlibException {
     public:
         AudioException(string message) : MumlibException(message) { }
diff --git a/include/mumlib/Callback.hpp b/include/mumlib/Callback.hpp
index 896f5b1..ebb712e 100644
--- a/include/mumlib/Callback.hpp
+++ b/include/mumlib/Callback.hpp
@@ -10,7 +10,7 @@ namespace mumlib {
 
     class Callback {
     public:
-        virtual void version_callback(
+        virtual void version(
                 uint16_t major,
                 uint8_t minor,
                 uint8_t patch,
@@ -18,23 +18,23 @@ namespace mumlib {
                 string os,
                 string os_version) { };
 
-        virtual void audio_callback(
-                uint8_t *pcm_data,
+        virtual void audio(
+                int16_t *pcm_data,
                 uint32_t pcm_data_size) { };
 
-        virtual void unsupported_audio_callback(
+        virtual void unsupportedAudio(
                 uint8_t *encoded_audio_data,
                 uint32_t encoded_audio_data_size) { };
 
-        virtual void serversync_callback(
+        virtual void serverSync(
                 string welcome_text,
                 int32_t session,
                 int32_t max_bandwidth,
                 int64_t permissions) { };
 
-        virtual void channelremove_callback(uint32_t channel_id) { };
+        virtual void channelRemove(uint32_t channel_id) { };
 
-        virtual void channelstate_callback(
+        virtual void channelState(
                 string name,
                 int32_t channel_id,
                 int32_t parent,
@@ -45,13 +45,13 @@ namespace mumlib {
                 bool temporary,
                 int32_t position) { };
 
-        virtual void userremove_callback(
+        virtual void userRemove(
                 uint32_t session,
                 int32_t actor,
                 string reason,
                 bool ban) { };
 
-        virtual void userstate_callback(
+        virtual void userState(
                 int32_t session,
                 int32_t actor,
                 string name,
@@ -66,8 +66,8 @@ namespace mumlib {
                 int32_t priority_speaker,
                 int32_t recording) { };
 
-        virtual void banlist_callback(
-                uint8_t *ip_data,
+        virtual void banList(
+                const uint8_t *ip_data,
                 uint32_t ip_data_size,
                 uint32_t mask,
                 string name,
@@ -76,17 +76,14 @@ namespace mumlib {
                 string start,
                 int32_t duration) { };
 
-        virtual void textmessage_callback(
+        virtual void textMessage(
                 uint32_t actor,
-                uint32_t n_session,
-                uint32_t *session,
-                uint32_t n_channel_id,
-                uint32_t *channel_id,
-                uint32_t n_tree_id,
-                uint32_t *tree_id,
+                std::vector<uint32_t> session,
+                std::vector<uint32_t> channel_id,
+                std::vector<uint32_t> tree_id,
                 string message) { };
 
-        virtual void permissiondenied_callback(
+        virtual void permissionDenied(
                 int32_t permission,
                 int32_t channel_id,
                 int32_t session,
@@ -94,64 +91,48 @@ namespace mumlib {
                 int32_t deny_type,
                 string name) { };
 
-        virtual void acl_callback() { };
-
-        virtual void queryusers_callback(
+        virtual void queryUsers(
                 uint32_t n_ids,
                 uint32_t *ids,
                 uint32_t n_names,
                 string *names) { };
 
-        virtual void cryptsetup_callback(
-                uint32_t key_size,
-                uint8_t *key,
-                uint32_t client_nonce_size,
-                uint8_t *client_nonce,
-                uint32_t server_nonce_size,
-                uint8_t *server_nonce) { };
-
-        virtual void contextactionmodify_callback(
+        virtual void contextActionModify(
                 string action,
                 string text,
                 uint32_t m_context,
                 uint32_t operation) { };
 
-        virtual void contextaction_callback(
+        virtual void contextAction(
                 int32_t session,
                 int32_t channel_id,
                 string action) { };
 
-        virtual void userlist_callback(
+        virtual void userList(
                 uint32_t user_id,
                 string name,
                 string last_seen,
                 int32_t last_channel) { };
 
-        virtual void voicetarget_callback() { };
-
-        virtual void permissionquery_callback(
+        virtual void permissionQuery(
                 int32_t channel_id,
                 uint32_t permissions,
                 int32_t flush) { };
 
-        virtual void codecversion_callback(
+        virtual void codecVersion(
                 int32_t alpha,
                 int32_t beta,
                 uint32_t prefer_alpha,
                 int32_t opus) { };
 
-        virtual void userstats_callback() { };
-
-        virtual void requestblob_callback() { };
-
-        virtual void serverconfig_callback(
+        virtual void serverConfig(
                 uint32_t max_bandwidth,
                 string welcome_text,
                 uint32_t allow_html,
                 uint32_t message_length,
                 uint32_t image_message_length) { };
 
-        virtual void suggestconfig_callback(
+        virtual void suggestConfig(
                 uint32_t version,
                 uint32_t positional,
                 uint32_t push_to_talk) { };
@@ -166,7 +147,7 @@ namespace mumlib {
 
         ~BasicCallback();
 
-        virtual void version_callback(
+        virtual void version(
                 uint16_t major,
                 uint8_t minor,
                 uint8_t patch,
@@ -174,23 +155,23 @@ namespace mumlib {
                 string os,
                 string os_version);
 
-        virtual void audio_callback(
-                uint8_t *pcm_data,
+        virtual void audio(
+                int16_t *pcm_data,
                 uint32_t pcm_data_size);
 
-        virtual void unsupported_audio_callback(
+        virtual void unsupportedAudio(
                 uint8_t *encoded_audio_data,
                 uint32_t encoded_audio_data_size);
 
-        virtual void serversync_callback(
+        virtual void serverSync(
                 string welcome_text,
                 int32_t session,
                 int32_t max_bandwidth,
                 int64_t permissions);
 
-        virtual void channelremove_callback(uint32_t channel_id);
+        virtual void channelRemove(uint32_t channel_id);
 
-        virtual void channelstate_callback(
+        virtual void channelState(
                 string name,
                 int32_t channel_id,
                 int32_t parent,
@@ -201,13 +182,13 @@ namespace mumlib {
                 bool temporary,
                 int32_t position);
 
-        virtual void userremove_callback(
+        virtual void userRemove(
                 uint32_t session,
                 int32_t actor,
                 string reason,
                 bool ban);
 
-        virtual void userstate_callback(
+        virtual void userState(
                 int32_t session,
                 int32_t actor,
                 string name,
@@ -222,8 +203,8 @@ namespace mumlib {
                 int32_t priority_speaker,
                 int32_t recording);
 
-        virtual void banlist_callback(
-                uint8_t *ip_data,
+        virtual void banList(
+                const uint8_t *ip_data,
                 uint32_t ip_data_size,
                 uint32_t mask,
                 string name,
@@ -232,17 +213,14 @@ namespace mumlib {
                 string start,
                 int32_t duration);
 
-        virtual void textmessage_callback(
+        virtual void textMessage(
                 uint32_t actor,
-                uint32_t n_session,
-                uint32_t *session,
-                uint32_t n_channel_id,
-                uint32_t *channel_id,
-                uint32_t n_tree_id,
-                uint32_t *tree_id,
+                std::vector<uint32_t> session,
+                std::vector<uint32_t> channel_id,
+                std::vector<uint32_t> tree_id,
                 string message);
 
-        virtual void permissiondenied_callback(
+        virtual void permissionDenied(
                 int32_t permission,
                 int32_t channel_id,
                 int32_t session,
@@ -250,64 +228,48 @@ namespace mumlib {
                 int32_t deny_type,
                 string name);
 
-        virtual void acl_callback();
-
-        virtual void queryusers_callback(
+        virtual void queryUsers(
                 uint32_t n_ids,
                 uint32_t *ids,
                 uint32_t n_names,
                 string *names);
 
-        virtual void cryptsetup_callback(
-                uint32_t key_size,
-                uint8_t *key,
-                uint32_t client_nonce_size,
-                uint8_t *client_nonce,
-                uint32_t server_nonce_size,
-                uint8_t *server_nonce);
-
-        virtual void contextactionmodify_callback(
+        virtual void contextActionModify(
                 string action,
                 string text,
                 uint32_t m_context,
                 uint32_t operation);
 
-        virtual void contextaction_callback(
+        virtual void contextAction(
                 int32_t session,
                 int32_t channel_id,
                 string action);
 
-        virtual void userlist_callback(
+        virtual void userList(
                 uint32_t user_id,
                 string name,
                 string last_seen,
                 int32_t last_channel);
 
-        virtual void voicetarget_callback();
-
-        virtual void permissionquery_callback(
+        virtual void permissionQuery(
                 int32_t channel_id,
                 uint32_t permissions,
                 int32_t flush);
 
-        virtual void codecversion_callback(
+        virtual void codecVersion(
                 int32_t alpha,
                 int32_t beta,
                 uint32_t prefer_alpha,
                 int32_t opus);
 
-        virtual void userstats_callback();
-
-        virtual void requestblob_callback();
-
-        virtual void serverconfig_callback(
+        virtual void serverConfig(
                 uint32_t max_bandwidth,
                 string welcome_text,
                 uint32_t allow_html,
                 uint32_t message_length,
                 uint32_t image_message_length);
 
-        virtual void suggestconfig_callback(
+        virtual void suggestConfig(
                 uint32_t version,
                 uint32_t positional,
                 uint32_t push_to_talk);
diff --git a/mumlib_example.cpp b/mumlib_example.cpp
index 86c162f..b41b8bb 100644
--- a/mumlib_example.cpp
+++ b/mumlib_example.cpp
@@ -31,7 +31,7 @@ int main(int argc, char *argv[]) {
     log4cpp::Appender *appender1 = new log4cpp::OstreamAppender("console", &std::cout);
     appender1->setLayout(new log4cpp::BasicLayout());
     log4cpp::Category &logger = log4cpp::Category::getRoot();
-    logger.setPriority(log4cpp::Priority::WARN);
+    logger.setPriority(log4cpp::Priority::DEBUG);
     logger.addAppender(appender1);
 
     if (argc < 3) {
diff --git a/src/Audio.cpp b/src/Audio.cpp
index 7b54f9a..6052f06 100644
--- a/src/Audio.cpp
+++ b/src/Audio.cpp
@@ -4,7 +4,7 @@
 
 mumlib::Audio::Audio()
         :
-        logger(log4cpp::Category::getInstance("Mumlib.Audio")),
+        logger(log4cpp::Category::getInstance("mumlib.Audio")),
         opusDecoder(nullptr),
         opusEncoder(nullptr),
         outgoingSequenceNumber(1) {
diff --git a/src/Callback.cpp b/src/Callback.cpp
index b330231..f98f7de 100644
--- a/src/Callback.cpp
+++ b/src/Callback.cpp
@@ -9,10 +9,11 @@ using namespace mumlib;
 namespace mumlib {
     struct _BasicCallback_Private : boost::noncopyable {
     public:
-        _BasicCallback_Private() : logger(log4cpp::Category::getInstance("BasicCallback")) { }
+        _BasicCallback_Private() : logger(log4cpp::Category::getInstance("mumlib.BasicCallback")) { }
 
         log4cpp::Category &logger;
     };
+
 }
 
 mumlib::BasicCallback::BasicCallback() {
@@ -23,160 +24,102 @@ mumlib::BasicCallback::~BasicCallback() {
     delete impl;
 }
 
-void mumlib::BasicCallback::version_callback(
+void mumlib::BasicCallback::version(
         uint16_t major,
         uint8_t minor,
         uint8_t patch,
         string release,
         string os,
         string os_version) {
-    impl->logger.debug("Version Callback: v%d.%d.%d. %s/%s/%s\n", major, minor, patch, release.c_str(), os.c_str(),
+    impl->logger.debug("version: v%d.%d.%d. %s/%s/%s\n", major, minor, patch, release.c_str(), os.c_str(),
                        os_version.c_str());
 }
 
-void mumlib::BasicCallback::audio_callback(
-        uint8_t *pcm_data,
+void mumlib::BasicCallback::audio(
+        int16_t *pcmData,
         uint32_t pcm_data_size) {
-    impl->logger.debug("Received %d bytes of raw PCM data.", pcm_data_size);
+    impl->logger.debug("audio: %d bytes of raw PCM data.", pcm_data_size);
 }
 
-void mumlib::BasicCallback::unsupported_audio_callback(
-        uint8_t *encoded_audio_data,
-        uint32_t encoded_audio_data_size) {
-    impl->logger.debug("Received %d bytes of encoded audio data.", encoded_audio_data_size);
+void BasicCallback::unsupportedAudio(uint8_t *encoded_audio_data, uint32_t encoded_audio_data_size) {
+    impl->logger.debug("unsupportedAudio: received %d bytes of encoded data.", encoded_audio_data_size);
 }
 
-void mumlib::BasicCallback::serversync_callback(
-        string welcome_text,
-        int32_t session,
-        int32_t max_bandwidth,
-        int64_t permissions) {
-    impl->logger.debug("Text: %s, session: %d, max bandwidth: %d, permissions: %d", welcome_text.c_str(), session,
+void BasicCallback::serverSync(string welcome_text, int32_t session, int32_t max_bandwidth, int64_t permissions) {
+    impl->logger.debug("serverSync: text: %s, session: %d, max bandwidth: %d, permissions: %d", welcome_text.c_str(),
+                       session,
                        max_bandwidth, permissions);
 }
 
-void mumlib::BasicCallback::channelremove_callback(uint32_t channel_id) { }
-
-void mumlib::BasicCallback::channelstate_callback(
-        string name,
-        int32_t channel_id,
-        int32_t parent,
-        string description,
-        vector<uint32_t> links,
-        vector<uint32_t> inks_add,
-        vector<uint32_t> links_remove,
-        bool temporary,
-        int32_t position) {
-    impl->logger.debug("Obtained channel state %d: %s, %s", channel_id, name.c_str(), description.c_str());
+void BasicCallback::channelRemove(uint32_t channel_id) {
+    impl->logger.debug("channelRemove: %d", channel_id);
 }
 
-void mumlib::BasicCallback::userremove_callback(
-        uint32_t session,
-        int32_t actor,
-        string reason,
-        bool ban) { }
+void BasicCallback::channelState(string name, int32_t channel_id, int32_t parent, string description,
+                                 vector<uint32_t> links, vector<uint32_t> inks_add, vector<uint32_t> links_remove,
+                                 bool temporary, int32_t position) {
+    impl->logger.debug("channelState: %d: %s, %s", channel_id, name.c_str(), description.c_str());
+}
 
-void mumlib::BasicCallback::userstate_callback(
-        int32_t session,
-        int32_t actor,
-        string name,
-        int32_t user_id,
-        int32_t channel_id,
-        int32_t mute,
-        int32_t deaf,
-        int32_t suppress,
-        int32_t self_mute,
-        int32_t self_deaf,
-        string comment,
-        int32_t priority_speaker,
-        int32_t recording) { }
+void BasicCallback::userRemove(uint32_t session, int32_t actor, string reason, bool ban) {
+    impl->logger.debug("userRemove: session: %d, actor: %d, reason: %s, ban: %d.", session, actor, reason.c_str(), ban);
+}
 
-void mumlib::BasicCallback::banlist_callback(
-        uint8_t *ip_data,
-        uint32_t ip_data_size,
-        uint32_t mask,
-        string name,
-        string hash,
-        string reason,
-        string start,
-        int32_t duration) { }
+void BasicCallback::userState(int32_t session, int32_t actor, string name, int32_t user_id, int32_t channel_id,
+                              int32_t mute, int32_t deaf, int32_t suppress, int32_t self_mute, int32_t self_deaf,
+                              string comment, int32_t priority_speaker, int32_t recording) {
+    impl->logger.debug("userState: %s: mute: %d, deaf: %d, suppress: %d, self mute: %d, self deaf: %d",
+                       name.c_str(), mute, deaf, suppress, self_mute, self_deaf);
+}
 
-void mumlib::BasicCallback::textmessage_callback(
+void BasicCallback::banList(const uint8_t *ip_data, uint32_t ip_data_size, uint32_t mask, string name, string hash,
+                            string reason, string start, int32_t duration) {
+    impl->logger.debug("banList: %s, hash: %s, reason: %s", name.c_str(), hash.c_str(), reason.c_str());
+}
+
+void BasicCallback::textMessage(
         uint32_t actor,
-        uint32_t n_session,
-        uint32_t *session,
-        uint32_t n_channel_id,
-        uint32_t *channel_id,
-        uint32_t n_tree_id,
-        uint32_t *tree_id,
-        string message) { }
+        std::vector<uint32_t> session,
+        std::vector<uint32_t> channel_id,
+        std::vector<uint32_t> tree_id,
+        string message) {
+    impl->logger.debug("textMessage: %d: %s", actor, message.c_str());
+}
 
-void mumlib::BasicCallback::permissiondenied_callback(
-        int32_t permission,
-        int32_t channel_id,
-        int32_t session,
-        string reason,
-        int32_t deny_type,
-        string name) { }
+void BasicCallback::permissionDenied(int32_t permission, int32_t channel_id, int32_t session, string reason,
+                                     int32_t deny_type, string name) {
+    impl->logger.debug("permissionDenied: %s %s", name.c_str(), reason.c_str());
+}
 
-void mumlib::BasicCallback::acl_callback() { }
+void BasicCallback::queryUsers(uint32_t n_ids, uint32_t *ids, uint32_t n_names, string *names) {
+    impl->logger.debug("queryUsers: %d users", n_names); //todo make it more high-level
+}
 
-void mumlib::BasicCallback::queryusers_callback(
-        uint32_t n_ids,
-        uint32_t *ids,
-        uint32_t n_names,
-        string *names) { }
+void BasicCallback::contextActionModify(string action, string text, uint32_t m_context, uint32_t operation) {
+    impl->logger.debug("contextActionModify: ");
+}
 
-void mumlib::BasicCallback::cryptsetup_callback(
-        uint32_t key_size,
-        uint8_t *key,
-        uint32_t client_nonce_size,
-        uint8_t *client_nonce,
-        uint32_t server_nonce_size,
-        uint8_t *server_nonce) { }
+void BasicCallback::contextAction(int32_t session, int32_t channel_id, string action) {
+    impl->logger.debug("contextAction.");
+}
 
-void mumlib::BasicCallback::contextactionmodify_callback(
-        string action,
-        string text,
-        uint32_t m_context,
-        uint32_t operation) { }
+void BasicCallback::userList(uint32_t user_id, string name, string last_seen, int32_t last_channel) {
+    impl->logger.debug("userList.");
+}
 
-void mumlib::BasicCallback::contextaction_callback(
-        int32_t session,
-        int32_t channel_id,
-        string action) { }
+void BasicCallback::permissionQuery(int32_t channel_id, uint32_t permissions, int32_t flush) {
+    impl->logger.debug("permissionQuery.");
+}
 
-void mumlib::BasicCallback::userlist_callback(
-        uint32_t user_id,
-        string name,
-        string last_seen,
-        int32_t last_channel) { }
+void BasicCallback::codecVersion(int32_t alpha, int32_t beta, uint32_t prefer_alpha, int32_t opus) {
+    impl->logger.debug("codecVersion.");
+}
 
-void mumlib::BasicCallback::voicetarget_callback() { }
+void BasicCallback::serverConfig(uint32_t max_bandwidth, string welcome_text, uint32_t allow_html,
+                                 uint32_t message_length, uint32_t image_message_length) {
+    impl->logger.debug("serverConfig: %s", welcome_text.c_str());
+}
 
-void mumlib::BasicCallback::permissionquery_callback(
-        int32_t channel_id,
-        uint32_t permissions,
-        int32_t flush) { }
-
-void mumlib::BasicCallback::codecversion_callback(
-        int32_t alpha,
-        int32_t beta,
-        uint32_t prefer_alpha,
-        int32_t opus) { }
-
-void mumlib::BasicCallback::userstats_callback() { }
-
-void mumlib::BasicCallback::requestblob_callback() { }
-
-void mumlib::BasicCallback::serverconfig_callback(
-        uint32_t max_bandwidth,
-        string welcome_text,
-        uint32_t allow_html,
-        uint32_t message_length,
-        uint32_t image_message_length) { }
-
-void mumlib::BasicCallback::suggestconfig_callback(
-        uint32_t version,
-        uint32_t positional,
-        uint32_t push_to_talk) { }
+void BasicCallback::suggestConfig(uint32_t version, uint32_t positional, uint32_t push_to_talk) {
+    impl->logger.debug("suggestConfig.");
+}
diff --git a/src/Transport.cpp b/src/Transport.cpp
index fd88461..1909401 100644
--- a/src/Transport.cpp
+++ b/src/Transport.cpp
@@ -30,7 +30,7 @@ mumlib::Transport::Transport(
         mumlib::ProcessControlMessageFunction processMessageFunc,
         ProcessEncodedAudioPacketFunction processEncodedAudioPacketFunction,
         bool noUdp) :
-        logger(log4cpp::Category::getInstance("Mumlib.Transport")),
+        logger(log4cpp::Category::getInstance("mumlib.Transport")),
         ioService(ioService),
         processMessageFunction(processMessageFunc),
         processEncodedAudioPacketFunction(processEncodedAudioPacketFunction),
@@ -154,7 +154,7 @@ void mumlib::Transport::doReceiveUdp() {
 
                         if (udpActive == false) {
                             udpActive = true;
-                            logger.info("UDP is up.");
+                            logger.notice("UDP is up.");
                         }
 
                         uint8_t plainBuffer[1024];
@@ -376,12 +376,6 @@ void mumlib::Transport::processMessageInternal(MessageType messageType, uint8_t
             }
         }
             break;
-        case MessageType::VOICETARGET: {
-            MumbleProto::VoiceTarget voiceTarget;
-            voiceTarget.ParseFromArray(buffer, length);
-            logger.warn("VoiceTarget Message: I don't think the server ever sends this structure....");
-        }
-            break;
         default: {
             logger.debug("Calling external ProcessControlMessageFunction.");
             processMessageFunction(messageType, buffer, length);
diff --git a/src/mumlib.cpp b/src/mumlib.cpp
index 88faa1a..e912294 100644
--- a/src/mumlib.cpp
+++ b/src/mumlib.cpp
@@ -1,11 +1,11 @@
-#include "mumlib.hpp"
-
 #include "mumlib/CryptState.hpp"
 #include "mumlib/VarInt.hpp"
 #include "mumlib/enums.hpp"
 #include "mumlib/Transport.hpp"
 #include "mumlib/Audio.hpp"
 
+#include "mumlib.hpp"
+
 #include <boost/asio/ssl.hpp>
 #include <boost/bind.hpp>
 #include <log4cpp/Category.hh>
@@ -35,7 +35,7 @@ namespace mumlib {
                 case MessageType::VERSION: {
                     MumbleProto::Version version;
                     version.ParseFromArray(buffer, length);
-                    callback->version_callback(
+                    callback->version(
                             version.version() >> 16,
                             version.version() >> 8 & 0xff,
                             version.version() & 0xff,
@@ -47,7 +47,7 @@ namespace mumlib {
                 case MessageType::SERVERSYNC: {
                     MumbleProto::ServerSync serverSync;
                     serverSync.ParseFromArray(buffer, length);
-                    callback->serversync_callback(
+                    callback->serverSync(
                             serverSync.welcome_text(),
                             serverSync.session(),
                             serverSync.max_bandwidth(),
@@ -58,7 +58,7 @@ namespace mumlib {
                 case MessageType::CHANNELREMOVE: {
                     MumbleProto::ChannelRemove channelRemove;
                     channelRemove.ParseFromArray(buffer, length);
-                    callback->channelremove_callback(channelRemove.channel_id());
+                    callback->channelRemove(channelRemove.channel_id());
                 }
                     break;
                 case MessageType::CHANNELSTATE: {
@@ -83,7 +83,7 @@ namespace mumlib {
                     std::copy(channelState.links_remove().begin(), channelState.links_remove().end(),
                               links_remove.begin());
 
-                    callback->channelstate_callback(
+                    callback->channelState(
                             channelState.name(),
                             channel_id,
                             parent,
@@ -104,7 +104,7 @@ namespace mumlib {
                     bool ban = user_remove.has_ban() ? user_remove.ban()
                                                      : false; //todo make sure it's correct to assume it's false
 
-                    callback->userremove_callback(
+                    callback->userRemove(
                             user_remove.session(),
                             actor,
                             user_remove.reason(),
@@ -112,64 +112,150 @@ namespace mumlib {
                     );
                 }
                     break;
-                case MessageType::USERSTATE: // 9
-//                    return MessageType::private_process_userstate(context, message, message_size);
+                case MessageType::USERSTATE: {
+                    MumbleProto::UserState userState;
+                    userState.ParseFromArray(buffer, length);
 
+                    // There are far too many things in this structure. Culling to the ones that are probably important
+                    int32_t session = userState.has_session() ? userState.session() : -1;
+                    int32_t actor = userState.has_actor() ? userState.actor() : -1;
+                    int32_t user_id = userState.has_user_id() ? userState.user_id() : -1;
+                    int32_t channel_id = userState.has_channel_id() ? userState.channel_id() : -1;
+                    int32_t mute = userState.has_mute() ? userState.mute() : -1;
+                    int32_t deaf = userState.has_deaf() ? userState.deaf() : -1;
+                    int32_t suppress = userState.has_suppress() ? userState.suppress() : -1;
+                    int32_t self_mute = userState.has_self_mute() ? userState.self_mute() : -1;
+                    int32_t self_deaf = userState.has_self_deaf() ? userState.self_deaf() : -1;
+                    int32_t priority_speaker = userState.has_priority_speaker() ? userState.priority_speaker() : -1;
+                    int32_t recording = userState.has_recording() ? userState.recording() : -1;
+
+                    callback->userState(session,
+                                        actor,
+                                        userState.name(),
+                                        user_id,
+                                        channel_id,
+                                        mute,
+                                        deaf,
+                                        suppress,
+                                        self_mute,
+                                        self_deaf,
+                                        userState.comment(),
+                                        priority_speaker,
+                                        recording);
+                }
                     break;
-                case MessageType::BANLIST: // 10
-//                    return MessageType::private_process_banlist(context, message, message_size);
+                case MessageType::BANLIST: {
+                    MumbleProto::BanList ban_list;
+                    ban_list.ParseFromArray(buffer, length);
+                    for (int i = 0; i < ban_list.bans_size(); i++) {
+                        auto ban = ban_list.bans(i);
 
+                        const uint8_t *ip_data = reinterpret_cast<const uint8_t *>(ban.address().c_str());
+                        uint32_t ip_data_size = ban.address().size();
+                        int32_t duration = ban.has_duration() ? ban.duration() : -1;
+
+                        callback->banList(
+                                ip_data,
+                                ip_data_size,
+                                ban.mask(),
+                                ban.name(),
+                                ban.hash(),
+                                ban.reason(),
+                                ban.start(),
+                                duration);
+                    }
+                }
                     break;
-                case MessageType::TEXTMESSAGE: // 11
-//                    return MessageType::private_process_textmessage(context, message, message_size);
+                case MessageType::TEXTMESSAGE: {
+                    MumbleProto::TextMessage text_message;
+                    text_message.ParseFromArray(buffer, length);
 
+                    int32_t actor = text_message.has_actor() ? text_message.actor() : -1;
+
+                    vector<uint32_t> sessions;
+                    for (int i = 0; i < text_message.session_size(); ++i) {
+                        sessions.push_back(text_message.session(i));
+                    }
+
+                    vector<uint32_t> channel_ids;
+                    for (int i = 0; i < text_message.channel_id_size(); ++i) {
+                        channel_ids.push_back(text_message.channel_id(i));
+                    }
+
+                    vector<uint32_t> tree_ids;
+                    for (int i = 0; i < text_message.tree_id_size(); ++i) {
+                        tree_ids.push_back(text_message.tree_id(i));
+                    }
+
+                    callback->textMessage(actor, sessions, channel_ids, tree_ids, text_message.message());
+                }
                     break;
                 case MessageType::PERMISSIONDENIED: // 12
-//                    return MessageType::private_process_permissiondenied(context, message, message_size);
-
+                    logger->warn("PermissionDenied Message: support not implemented yet");
                     break;
                 case MessageType::ACL: // 13
-//                    return MessageType::private_process_acl(context, message, message_size);
-
+                    logger->warn("ACL Message: support not implemented yet.");
                     break;
                 case MessageType::QUERYUSERS: // 14
-//                    return MessageType::private_process_queryusers(context, message, message_size);
-
+                    logger->warn("QueryUsers Message: support not implemented yet");
                     break;
                 case MessageType::CONTEXTACTIONMODIFY: // 16
-//                    return MessageType::private_process_contextactionmodify(context, message, message_size);
-
+                    logger->warn("ContextActionModify Message: support not implemented yet");
                     break;
                 case MessageType::CONTEXTACTION: // 17
-//                    return MessageType::private_process_contextaction(context, message, message_size);
-
+                    logger->warn("ContextAction Message: support not implemented yet");
                     break;
                 case MessageType::USERLIST: // 18
-//                    return MessageType::private_process_userlist(context, message, message_size);
-
+                    logger->warn("UserList Message: support not implemented yet");
                     break;
-                case MessageType::PERMISSIONQUERY: // 20
-//                    return MessageType::private_process_permission_query(context, message, message_size);
-
+                case MessageType::VOICETARGET:
+                    logger->warn("VoiceTarget Message: I don't think the server ever sends this structure.");
                     break;
-                case MessageType::CODECVERSION: // 21
-//                    return MessageType::private_process_codecversion(context, message, message_size);
+                case MessageType::PERMISSIONQUERY: {
+                    MumbleProto::PermissionQuery permissionQuery;
+                    permissionQuery.ParseFromArray(buffer, length);
 
+                    int32_t channel_id = permissionQuery.has_channel_id() ? permissionQuery.channel_id() : -1;
+                    uint32_t permissions = permissionQuery.has_permissions() ? permissionQuery.permissions() : 0;
+                    uint32_t flush = permissionQuery.has_flush() ? permissionQuery.flush() : -1;
+
+                    callback->permissionQuery(channel_id, permissions, flush);
+                }
                     break;
-                case MessageType::USERSTATS: // 22
-//                    return MessageType::private_process_userstats(context, message, message_size);
+                case MessageType::CODECVERSION: {
+                    MumbleProto::CodecVersion codecVersion;
+                    codecVersion.ParseFromArray(buffer, length);
 
+                    int32_t alpha = codecVersion.alpha();
+                    int32_t beta = codecVersion.beta();
+                    uint32_t prefer_alpha = codecVersion.prefer_alpha();
+                    int32_t opus = codecVersion.has_opus() ? codecVersion.opus() : 0;
+
+                    callback->codecVersion(alpha, beta, prefer_alpha, opus);
+                }
+                    break;
+                case MessageType::USERSTATS:
+                    logger->warn("UserStats Message: support not implemented yet");
                     break;
                 case MessageType::REQUESTBLOB: // 23
-//                    return MessageType::private_process_requestblob(context, message, message_size);
-
+                    logger->warn("RequestBlob Message: I don't think this is sent by the server.");
                     break;
-                case MessageType::SERVERCONFIG: // 24
-//                    return MessageType::private_process_serverconfig(context, message, message_size);
+                case MessageType::SERVERCONFIG: {
+                    MumbleProto::ServerConfig serverConfig;
+                    serverConfig.ParseFromArray(buffer, length);
 
+                    uint32_t max_bandwidth = serverConfig.has_max_bandwidth() ? serverConfig.max_bandwidth() : 0;
+                    uint32_t allow_html = serverConfig.has_allow_html() ? serverConfig.allow_html() : 0;
+                    uint32_t message_length = serverConfig.has_message_length() ? serverConfig.message_length() : 0;
+                    uint32_t image_message_length = serverConfig.has_image_message_length()
+                                                    ? serverConfig.image_message_length() : 0;
+
+                    callback->serverConfig(max_bandwidth, serverConfig.welcome_text(), allow_html, message_length,
+                                           image_message_length);
+                }
                     break;
                 case MessageType::SUGGESTCONFIG: // 25
-//                    return MessageType::private_process_suggestconfig(context, message, message_size);
+                    logger->warn("SuggestConfig Message: support not implemented yet");
                     break;
                 default:
                     throw MumlibException("unknown message type: " + to_string(static_cast<int>(messageType)));
@@ -179,8 +265,14 @@ namespace mumlib {
 
         bool processAudioPacket(AudioPacketType type, uint8_t *buffer, int length) {
             logger->info("Got %d B of encoded audio data.", length);
-            int16_t pcmData[5000];
-            audio->decodeAudioPacket(type, buffer, length, pcmData, 5000);
+            try {
+                int16_t pcmData[5000];
+                int pcmDataLength = audio->decodeAudioPacket(type, buffer, length, pcmData, 5000);
+                callback->audio(pcmData, pcmDataLength);
+            } catch (mumlib::AudioException &exp) {
+                logger->warn("Audio decode error: %s, calling unsupportedAudio callback.", exp.what());
+                callback->unsupportedAudio(buffer, length);
+            }
         }
 
     };
@@ -192,7 +284,7 @@ namespace mumlib {
 }
 
 mumlib::Mumlib::Mumlib() : impl(new _Mumlib_Private) {
-    impl->logger = &(log4cpp::Category::getInstance("Mumlib.Mumlib"));
+    impl->logger = &(log4cpp::Category::getInstance("mumlib.Mumlib"));
     impl->externalIoService = false;
     impl->ioService = new io_service();
     impl->audio = new Audio();