diff --git a/src/audio.cc b/src/audio.cc
index 77000c6..1d7e6e3 100644
--- a/src/audio.cc
+++ b/src/audio.cc
@@ -58,7 +58,7 @@ static int audioSoundDecoderReadHandler(void* data, void* buffer, unsigned int s
 
 // AudioOpen
 // 0x41A2EC
-int audioOpen(const char* fname, int* channels, int* sampleRate)
+int audioOpen(const char* fname, int* sampleRate)
 {
     char path[80];
     snprintf(path, sizeof(path), "%s", fname);
@@ -101,7 +101,6 @@ int audioOpen(const char* fname, int* channels, int* sampleRate)
         audioFile->soundDecoder = soundDecoderInit(audioSoundDecoderReadHandler, audioFile->stream, &(audioFile->channels), &(audioFile->sampleRate), &(audioFile->fileSize));
         audioFile->fileSize *= 2;
 
-        *channels = audioFile->channels;
         *sampleRate = audioFile->sampleRate;
     } else {
         audioFile->fileSize = fileGetSize(stream);
diff --git a/src/audio.h b/src/audio.h
index 752b914..b791c41 100644
--- a/src/audio.h
+++ b/src/audio.h
@@ -5,7 +5,7 @@ namespace fallout {
 
 typedef bool(AudioQueryCompressedFunc)(char* filePath);
 
-int audioOpen(const char* fname, int* channels, int* sampleRate);
+int audioOpen(const char* fname, int* sampleRate);
 int audioClose(int handle);
 int audioRead(int handle, void* buffer, unsigned int size);
 long audioSeek(int handle, long offset, int origin);
diff --git a/src/audio_file.cc b/src/audio_file.cc
index 8333c5a..22a0ba8 100644
--- a/src/audio_file.cc
+++ b/src/audio_file.cc
@@ -57,7 +57,7 @@ static int audioFileSoundDecoderReadHandler(void* data, void* buffer, unsigned i
 }
 
 // 0x41A88C
-int audioFileOpen(const char* fname, int* channels, int* sampleRate)
+int audioFileOpen(const char* fname, int* sampleRate)
 {
     char path[COMPAT_MAX_PATH];
     strcpy(path, fname);
@@ -99,7 +99,6 @@ int audioFileOpen(const char* fname, int* channels, int* sampleRate)
         audioFile->soundDecoder = soundDecoderInit(audioFileSoundDecoderReadHandler, audioFile->stream, &(audioFile->channels), &(audioFile->sampleRate), &(audioFile->fileSize));
         audioFile->fileSize *= 2;
 
-        *channels = audioFile->channels;
         *sampleRate = audioFile->sampleRate;
     } else {
         audioFile->fileSize = getFileSize(stream);
diff --git a/src/audio_file.h b/src/audio_file.h
index a43bdc7..b9f8bf2 100644
--- a/src/audio_file.h
+++ b/src/audio_file.h
@@ -5,7 +5,7 @@ namespace fallout {
 
 typedef bool(AudioFileQueryCompressedFunc)(char* filePath);
 
-int audioFileOpen(const char* fname, int* channels, int* sampleRate);
+int audioFileOpen(const char* fname, int* sampleRate);
 int audioFileClose(int handle);
 int audioFileRead(int handle, void* buf, unsigned int size);
 long audioFileSeek(int handle, long offset, int origin);
diff --git a/src/game_sound.cc b/src/game_sound.cc
index b1033ed..618457b 100644
--- a/src/game_sound.cc
+++ b/src/game_sound.cc
@@ -157,7 +157,7 @@ static int _gsound_speech_volume_get_set(int volume);
 static void speechPause();
 static void speechResume();
 static void _gsound_bkg_proc();
-static int gameSoundFileOpen(const char* fname, int* channels, int* sampleRate);
+static int gameSoundFileOpen(const char* fname, int* sampleRate);
 static long _gsound_write_();
 static long gameSoundFileTellNotImplemented(int handle);
 static int gameSoundFileWrite(int handle, const void* buf, unsigned int size);
@@ -1548,7 +1548,7 @@ void _gsound_bkg_proc()
 }
 
 // 0x451A08
-int gameSoundFileOpen(const char* fname, int* channels, int* sampleRate)
+int gameSoundFileOpen(const char* fname, int* sampleRate)
 {
     File* stream = fileOpen(fname, "rb");
     if (stream == NULL) {
diff --git a/src/sound.cc b/src/sound.cc
index 0576358..5306543 100644
--- a/src/sound.cc
+++ b/src/sound.cc
@@ -49,7 +49,7 @@ static long soundFileSize(int fileHandle);
 static long soundTellData(int fileHandle);
 static int soundWriteData(int fileHandle, const void* buf, unsigned int size);
 static int soundReadData(int fileHandle, void* buf, unsigned int size);
-static int soundOpenData(const char* filePath, int* channels, int* sampleRate);
+static int soundOpenData(const char* filePath, int* sampleRate);
 static long soundSeekData(int fileHandle, long offset, int origin);
 static int soundCloseData(int fileHandle);
 static char* soundFileManglerDefaultImpl(char* fname);
@@ -223,7 +223,7 @@ static int soundReadData(int fileHandle, void* buf, unsigned int size)
 }
 
 // 0x4AC768
-static int soundOpenData(const char* filePath, int* channels, int* sampleRate)
+static int soundOpenData(const char* filePath, int* sampleRate)
 {
     int flags;
 
@@ -616,7 +616,7 @@ int soundLoad(Sound* sound, char* filePath)
         return gSoundLastError;
     }
 
-    sound->io.fd = sound->io.open(gSoundFileNameMangler(filePath), &(sound->channels), &(sound->rate));
+    sound->io.fd = sound->io.open(gSoundFileNameMangler(filePath), &(sound->rate));
     if (sound->io.fd == -1) {
         gSoundLastError = SOUND_FILE_NOT_FOUND;
         return gSoundLastError;
diff --git a/src/sound.h b/src/sound.h
index 427b5f8..625bb90 100644
--- a/src/sound.h
+++ b/src/sound.h
@@ -46,7 +46,7 @@ typedef enum SoundError {
     SOUND_ERR_COUNT,
 } SoundError;
 
-typedef int SoundOpenProc(const char* filePath, int* channels, int* sampleRate);
+typedef int SoundOpenProc(const char* filePath, int* sampleRate);
 typedef int SoundCloseProc(int fileHandle);
 typedef int SoundReadProc(int fileHandle, void* buf, unsigned int size);
 typedef int SoundWriteProc(int fileHandle, const void* buf, unsigned int size);
diff --git a/src/sound_effects_cache.cc b/src/sound_effects_cache.cc
index 30f91ae..dd6094c 100644
--- a/src/sound_effects_cache.cc
+++ b/src/sound_effects_cache.cc
@@ -154,7 +154,7 @@ void soundEffectsCacheFlush()
 
 // sfxc_cached_open
 // 0x4A915C
-int soundEffectsCacheFileOpen(const char* fname, int* channels, int* sampleRate)
+int soundEffectsCacheFileOpen(const char* fname, int* sampleRate)
 {
     if (_sfxc_files_open >= SOUND_EFFECTS_MAX_COUNT) {
         return -1;
diff --git a/src/sound_effects_cache.h b/src/sound_effects_cache.h
index 579c856..483cb86 100644
--- a/src/sound_effects_cache.h
+++ b/src/sound_effects_cache.h
@@ -11,7 +11,7 @@ int soundEffectsCacheInit(int cache_size, const char* effectsPath);
 void soundEffectsCacheExit();
 int soundEffectsCacheInitialized();
 void soundEffectsCacheFlush();
-int soundEffectsCacheFileOpen(const char* fname, int* channels, int* sampleRate);
+int soundEffectsCacheFileOpen(const char* fname, int* sampleRate);
 int soundEffectsCacheFileClose(int handle);
 int soundEffectsCacheFileRead(int handle, void* buf, unsigned int size);
 int soundEffectsCacheFileWrite(int handle, const void* buf, unsigned int size);