some hosting peeps don't like you to have music on the net, so i wouldn't do it in mp3, my mate almost had his site taken down cos i put 1 up in mp3 format... i've got some up in windows media player format now an i don't think they've said anything, but the fukkers gone to finland an hasn't sorted a lik for them!!!! so, in short, make sure whoever's hosting peeps allow it or they could get in a lot of trouble...
i can arrange upto 3gig of webspace for peeps, problem is it would only be for a limited time, ie. 1pm-10pm etc