Occasionally I'll buy a CD, but most of the time I'm buying the songs from iTunes or downloading them. I usually only download foreign music though that iTunes doesn't have. Like certain Japanese artists, the U.S iTunes doesn't sell so I'll have no choice but to "pirate" the songs by downloading them. But I can't give you the site I use since it'd be against the rules. I'm sorry.
DON'T USE FROSTWIRE, WHATEVER YOU DO. DON'T USE ANY VERSION OF IT. OR ELSE. Nah, I'm kiddin'. But it dicked my other laptop up so bad. I'd advise you not to illegally download, just because it always screws computers up.