Hmm, I have the opposite problem... a lot of stuff I've decided not to download at some point, or have deleted thinking "I need space and I can always get it again later", I've never been able to find since.

But I'm into a lot of obscure stuff.

Also, some of it wasn't pirated, but was like legally free indie music where the band's site went down etc. Though there's some CDs I didn't snatch on OiNK that are probably a lost cause now.