WIP: the sound invariants changed, need to investigate. they are passing a new

short[] buffer into the SDL audio conversion, but the multiplier says its 8x
larger than before, short is only 2x larger than char. not clear who wrote this
this way and why

src/sound/sound_server.cpp

@@ -296,11 +296,11 @@ static void MixIntoBuffer(void *buffer, int samples)
 
 	if (EffectsEnabled) {
 		// Add channels to mixer buffer
-		MixChannelsToStereo32(Audio.MixerBuffer, samples);
+		// MixChannelsToStereo32(Audio.MixerBuffer, samples);
 	}
 	if (MusicEnabled) {
 		// Add music to mixer buffer
-		MixMusicToStereo32(Audio.MixerBuffer, samples);
+		// MixMusicToStereo32(Audio.MixerBuffer, samples);
 	}
 	ClipMixToStereo16(Audio.MixerBuffer, samples, (short *)buffer);
 }
@@ -317,7 +317,7 @@ static void MixIntoBuffer(void *buffer, int samples)
 static void FillAudio(void *, Uint8 *stream, int len)
 {
 	if (!Audio.Running) return;
-	Assert(len != Audio.Format.size);
+	Assert(len == Audio.Format.size);
 	SDL_memset(stream, 0, len);
 
 	SDL_LockMutex(Audio.Lock);