eMusic.com is the 2nd most popular online music store (just behind iTunes) and the most popular DRM-free store, with all tracks available in MP3 format. That means you never have to worry about whether tracks downloaded from eMusic will play on your iPod, your Rio, or your Zen music player. They're guaranteed to play on any music player you own. With over 1,000,000 songs from over 3,800 record labels, and no DRM... eMusic looks pretty nice.