// Get the average bitrate of a file.

float time=BASS_ChannelBytes2Seconds(stream,BASS_ChannelGetLength(stream)); // playback duration
DWORD len=BASS_StreamGetFilePosition(stream,BASS_FILEPOS_END); // file length
DWORD bitrate=(DWORD)(len/(125*time)+0.5); // bitrate (Kbps)