silence is constant, as is the buffer we pass to playAudio

src/audio.c

@@ -366,7 +366,7 @@ int openAudioDevice(AudioFormat * audioFormat)
 	return ret;
 }
 
-int playAudio(char *playChunk, int size)
+int playAudio(const char *playChunk, int size)
 {
 	int send;
 

src/audio.h

@@ -55,7 +55,7 @@ void finishAudioDriver(void);
 
 int openAudioDevice(AudioFormat * audioFormat);
 
-int playAudio(char *playChunk, int size);
+int playAudio(const char *playChunk, int size);
 
 void dropBufferedAudio(void);
 

src/decode.c

@@ -510,7 +510,7 @@ static void decodeParent(PlayerControl * pc, DecoderControl * dc, OutputBuffer *
 	int nextChunk = -1;
 	int test;
 	int decodeWaitedOn = 0;
-	char silence[CHUNK_SIZE];
+	static const char silence[CHUNK_SIZE];
 	double sizeToTime = 0.0;
 	int previousMetadataChunk = -1;
 	MetadataChunk currentMetadataChunk;
@@ -518,8 +518,6 @@ static void decodeParent(PlayerControl * pc, DecoderControl * dc, OutputBuffer *
 	int end;
 	int next = -1;
 
-	memset(silence, 0, CHUNK_SIZE);
-
 	if (waitOnDecode(pc, dc, cb, &decodeWaitedOn) < 0)
 		return;