Originally Posted by AudioTrack
I just tried and the piano substitute played OK here.
Have you ever saved the song as an Audio file? Check the folder that the song is saved in for a WAV file with the same name. If so, rename that file, load the song again and see if it's OK. If there is a WAV file with the same name it will play alongside the song file.

I loaded the demo song (the one without the solo tenor sax) and changed the Organ track to Piano as shown:

The sound is not only garbled but warbling big-time! It's absolutely horrible.
I tried a vibraphone with similar results.
No I don't save the song as Audio files. The only time I mess with that is when I export the tracks to Reaper.
It seems every time I load BIAB to work with it, it throws a loop at me. frown

A BIAB user for more than 30 years (if you can believe it) !