That's a good point, at least if people play mp3's off a laptop they can just take a laptop instead of a record bag, a laptop's not much hassle, but having to take or sort CD decks, a lot of people and clubs don't have them. It's a good idea catering for people into CD's, but mp3's would be better, especially for a shop on the net.

Bass heavy music are selling their stuff on mp4, I think you can only play them with itunes and they're only 128kbps, but it's an interesting idea. They only cost 99 cents per track, which isn't much at all, but it'd be pure profit and negates all the shipping hassles etc if you live in another country, which is a major advantage. And there'd be no running out/re-run malarkey!