diff --git a/source/application/StarApplicationController.hpp b/source/application/StarApplicationController.hpp
index 922ccd5..69e9d00 100644
--- a/source/application/StarApplicationController.hpp
+++ b/source/application/StarApplicationController.hpp
@@ -49,7 +49,7 @@ public:
   virtual AudioFormat enableAudio() = 0;
   virtual void disableAudio() = 0;
   
-  typedef void (__cdecl* AudioCallback)(void* userdata, uint8_t* stream, int len);
+  typedef void (*AudioCallback)(void* userdata, uint8_t* stream, int len);
   
   virtual bool openAudioInputDevice(const char* name, int freq, int channels, void* userdata, AudioCallback callback) = 0;
   virtual bool closeAudioInputDevice() = 0;
diff --git a/source/extern/CMakeLists.txt b/source/extern/CMakeLists.txt
index 2e4ea24..41cb9b5 100644
--- a/source/extern/CMakeLists.txt
+++ b/source/extern/CMakeLists.txt
@@ -3,10 +3,10 @@ SET (OPUS_INSTALL_CMAKE_CONFIG_MODULE OFF)
 SET (OPUS_X86_MAY_HAVE_AVX OFF)
 SET (OPUS_X86_MAY_HAVE_SSE4_1 OFF)
 SET (OPUS_ENABLE_FLOAT_API ON)
+SET (OPUS_FLOAT_APPROX ON)
 SET (OPUS_STACK_PROTECTOR OFF)
 SET (OPUS_NONTHREADSAFE_PSEUDOSTACK OFF)
 SET (OPUS_USE_ALLOCA ON)
-
 ADD_SUBDIRECTORY (opus)
 
 IF (OPUS_NONTHREADSAFE_PSEUDOSTACK)
diff --git a/source/game/StarWorldClient.cpp b/source/game/StarWorldClient.cpp
index d6e6020..56f28a2 100644
--- a/source/game/StarWorldClient.cpp
+++ b/source/game/StarWorldClient.cpp
@@ -795,7 +795,7 @@ void WorldClient::handleIncomingPackets(List<PacketPtr> const& packets) {
       m_damageManager->pushRemoteDamageRequest(damage->remoteDamageRequest);
 
     } else if (auto damage = as<DamageNotificationPacket>(packet)) {
-      std::string_view view(damage->remoteDamageNotification.damageNotification.targetMaterialKind.utf8());
+      std::string_view view = damage->remoteDamageNotification.damageNotification.targetMaterialKind.utf8();
       static const size_t FULL_SIZE = SECRET_BROADCAST_PREFIX.size() + Curve25519::SignatureSize;
       static const std::string LEGACY_VOICE_PREFIX = "data\0voice\0"s;
 
@@ -824,14 +824,16 @@ void WorldClient::handleIncomingPackets(List<PacketPtr> const& packets) {
         // (remove this and stop transmitting like this once most SE features are ported over)
         if (auto player = m_entityMap->get<Player>(damage->remoteDamageNotification.sourceEntityId)) {
           if (auto publicKey = player->effectsAnimator()->globalTagPtr("\0SE_VOICE_SIGNING_KEY"s)) {
-            auto rawData = view.substr(75);
+            auto raw = view.substr(75);
             if (m_broadcastCallback && Curve25519::verify(
               (uint8_t const*)view.data() + LEGACY_VOICE_PREFIX.size(),
               (uint8_t const*)publicKey->utf8Ptr(),
-              (void*)rawData.data(),
-                     rawData.size()
+              (void*)raw.data(),
+                     raw.size()
             )) {
-              m_broadcastCallback(player, "Voice\0"s + rawData);
+              auto broadcastData = "Voice\0"s;
+              broadcastData.append(raw.data(), raw.size());
+              m_broadcastCallback(player, broadcastData);
             }
           }
         }