RageSoundReader::Read(buf, unsigned bytes) -> (buf, int frames);

return value in frames, not bytes

stepmania/src/RageSoundReader_Chain.h

@@ -34,7 +34,7 @@ public:
 	/* It rarely makes sense to set an approximate time for a chained sound, since any
 	 * error in overlap will become obvious. */
 	int SetPosition_Fast( int iFrame ) { return SetPosition_Accurate( iFrame ); }
-	int Read( char *buf, unsigned len );
+	int Read( char *pBuf, int iFrames );
 	int GetSampleRate() const { return m_iActualSampleRate; }
 	unsigned GetNumChannels() const { return m_iChannels; }
 	bool IsStreamingFromDisk() const;