After the long wait I have upgraded to BiaB for Mac 2009. I use Biab to make backing tracks so that each band member can practice their own solo parts at home.
The sound of the real tracks is amazing. Now I do not have to export the midi files to Logic and re-record everything one track at a time with real instruments (you know, playing live in front of a mic).

Now to my question: All my music applications except BiaB use the space bar for start stop. I keep hitting the space bar in Biab, but it keeps on playing. Can that be set to start/stop in BiaB 2009? I think it can be done in the windows version. And if so, what to use for erasing chords?