This really could be good for a party with a limited number of songs. I agree not so great for my own collection in the 12,000 range....ripped from my own LP's, CD's, and home recordings. I just picked up more this weekend: 6 LP's, 4 CD's, and 3 45 rpm records this weekend at a church garage sale.
It would be a lot better to make a jukebox-like titlestrip poster or flyer rather than the linear list of songs. Lay it by the tablet that you're using that runs the app and that would actually be kind of classy compared to iTunes or such.
Brian