the site is most likely a spam look at the ads.... 100% free legal music downloads blah, blah, blah... there is a member login wtf? It may not be a scam but you'll have a better chance of enjoying a free full prorams:

Limewire:
http://www.limewire.com/english/content/download.shtml and click free

Bearshare:
http://www.bearshare.com/downloads.htm and click free (free version includes ad-ware Save! and some I.E toolbar)

Phex:
http://www.phex.kouk.de/mambo/content/view/17/29/ and look under your O.S and click download

qtella (Linux/UNIX only):
http://qtella.sourceforge.net/downloads.php for LINUX go under stable and click qtella-0.6.5.tar.gz (533KB) UNIX is under unstable and so is windows enviroment

Shareaza:
http://www.shareaza.com/?id=download and click witch download is for you