This function is the seek routine for the WAV I/O device.
DWORD WAV_Seek( DWORD dwOpenData, long pos, DWORD type );
The Wave API Manager never calls the WAV_Seek function, so this routine can be empty and can have an arbitrary return value. WAV_Seek is a required stream interface driver function, but the function WAV_IOControl handles all data communication. The audio MDD implementation always returns –1.