I won't pretend that I don't download most of my songs, but I DO buy whenever I can. I've probably only paid/brought 10% of the songs I have on my comp, but considering I've spent nearly $800 on them, I think I've made a good effort to support my favourite artists.
In case you're a filthy rich brat who's laughing at my mere $800 investment, I'm a student who works odd poor paying jobs and get's home at 1-2am whenever she can to earn the extra cash since dayjobs arn't an option.
As for downloads I get them off IRC, forums, friends. Basically anything except p2p programs and torrents.