Before there was iTunes, there was Winamp. A lot of people still prefer to use this freeware music player (and a lot of people still have opinions on when Winamp jumped the shark into bloatville, but don't let's get started on that).
Wired's just written up a detailed review of Winamp's 10th anniversary edition, AOL Winamp 5.5, which boasts a revamped interface, iPod syncing, remote music access and other advanced features:
"Best of all, Winamp makes it far easier than iTunes or Windows Media Player to discover new music online and incorporate it into your library without having to download MP3s through a browser and import them into your media player manually."
After I stop feeling really, really old, I think I'll download it and give it another whirl.