Forget that noise dude...download utorrent and go to piratebay.com I got sick of paying for songs since I like A LOT of music and $1 for a single song is kind of ridiculous.
If it's in your sig I don't think It's against the rules. If you're going around posting it everywhere, I'm pretty sure It'd be considered spam. But don't take my word for it, I'm not a mod.