loads of places: mediafire, rapidshare, rapidgator, uploaded, crocko etc.
If you look for albums the best thing to do is search on google the band/artist name with the album name + filestube or blogspot and just follow the links.
I also used albumhunt but I haven't been there in a long ass time since I haven't actually downloaded any music for a while and I could never be sure about visiting that site without suspecting some virus to come up. And with megaupload gone, a lot of links there will be broken so it'll be painful to make it through that when searching.
I don't bother with torrents too often as they are generally too slow, have an astraweb account and get my files from nzbmatrix. Private torrent sites like Torrent Day are okay because they encourage users to have a good ratio or else they get their account terminated (no hit and runs)