Flutterby™! : I like that karaokeversioncom has

I like that karaoke-version.com has explicit terms for use of their tracks for further purposes (though there's still the "need the mechanical or sync license" issue), is there another backing tracks site like that?

Bonus points if they have a version Peter DeRose's "Deep Purple" (which, yes, is difficult to find with all of the band name results).