Have you ever tried downloading limewire? That's how I get most of my music, and I've got at least 1.50 GB of music on my computer. (Since this seems like a horribly big number to me, I will say in my defense that my musical interests are huge and varying. I've got everything from Frank Sinatra/Dean Martin, to TMNT, to Bloodhound Gang in that big file).
Instructions: 1. Go to http://www.download.com 2. Type Limewire in the search box. 3. Easy-peasy from there.