Re: J.B. Guitar Backing Tracks
Given that a LOT of Joe's fans are guitar geeks, I would have thought that backing tracks would have been something that he would consider selling via his store. It's another avenue to get his music out there to the masses if people play his songs at gigs/jams etc.
I believe Steve Vai did something similar through iTunes a couple of years back - remixed a couple of his albums san guitar tracks and sold them individually on iTunes so other people could use them as 'play alongs'.