I don't buy my music from iTunes (most of it is mixtapes) so iCloud isn't really an option lol, tried Dropbox but I couldn't put folders in there without zipping them up. Didn't look at Skydrive but it's kinda late now lol
Do you have an external hard drive? Not the most elegant solution, but it'll work (you should plan on getting one anyway so you can make Time Machine backups of your new Mac in case something goes wrong)