Ripcast is a program that rips the mp3 from a stream like shoutcast.com and saves it on your computer for future use just pick your favorite genre and it'll bring up a list of stations I just barely got it and it introduced me to a lot of new songs that I like I would strongly suggest this to anybody just goto www.downloads.com and search for ripcast (also works best with winamp)
I used to get my music from audiogalaxy and BTW i have around 2500 songs in my HDD
that prg works definitely good but now it has a bunch of songs restricted ( but if u search a bit more u end up finding em) i thik u can also download it from Cnet or downloads.com