You know how to use torrents? They are the best for ANY kind of downloading.

There is a good guide on www.slyck.com if you're not sure how to use them. Post any questions you might have in this thread.

Ps. If you're looking for something more simple, just go to download.com and pick up Ares Lite. It's very similar to Kazaa, but lacks all the spyware and bogus files, thankfully.