RageSoundReader::Read(char *) -> int16_t *. This was originally

char * based on the idea of supporting more than one sample type.
I don't plan to do that (though I may change the sample type to float
or int32).

stepmania/src/RageSoundReader_Preload.h

@@ -16,7 +16,7 @@ public:
 	int GetLength() const;
 	int GetLength_Fast() const;
 	int SetPosition( int iFrame );
-	int Read( char *pBuffer, int iLength );
+	int Read( int16_t *pBuffer, int iLength );
 	int GetSampleRate() const { return m_iSampleRate; }
 	unsigned GetNumChannels() const { return m_iChannels; }
 	int GetNextSourceFrame() const;