Wow I have a great progie to use.
ITS CALLED PAY FOR IT.
Ok that's the pot calling the kettle black. I'd say bit torrent it's fast secure, last I heard. If you do use some of these P2P share programs (Kaza, limewire, bearshare, morpheas, ect) make sure you have "IP Guardian" (google for it) it warns you against certain IP addrs probing you and doesnt allow a connection. If you are looking for the safest way to D/L music without paying for it get yourself a usenet account.
other than that D/L music has gotten real cheap. Unless you are looking for something rare/hard to find get a napster subscritpion.
(I don't D/L music anymore, that I do pay for now)