Thanks everyone.
MarioD, yes, I have acoustic and electric 12-strings too. The Rickenbacker however, is another story! The floating "R" tailpiece (where you have to load the strings on the inside), combined with the half-slotted headstock, makes for an interesting experience. I have found the best way is to load all the strings, and secure them with blue or green painter's tape, which easily peels off. Then, you start to secure them into the tuners. Heaven forbid you break the high "G", as then you'll have to surgically insert one from the bottom. It resembles that 60's kid's game called Operation.

I think the beginner's forum here might be a good idea for getting a template on getting successful backing tracks with BiaB. I know it can be done, as I have recorded at a studio that used it and I was thrilled with the results. I just get impatient and want to get parts recorded!!