I this it was about 2007 I got the program but put it aside for a year or so. I was totally bewildered on how it worked but knew it did something great.
We use it now for backing track of both PD gospels and our own work.
I'm learning slowly. Every now and then I'll search for a midi file, many of which are either piano or organ and not that well done.
BIAB makes a real difference in a song.
Wyndham