Amazon.Com -World's biggest selection
BuyMusic.com -Download digital songs for 99 cents.  
CDNow -CDs 
CDWorld -One of the best selections of CDs we've seen 
Cheap-CDs -Very good.
GetMusic -Universal Music and BMG's new site  
iTunes -Digital music service. Good
Listen.com -eMusic vendor.
LyricsH -World's largest music database
MP3.com -A biggie. More than 750,000 downloadable songs.
MusicNet -Digital music service.
MusicNow -Digital music service. Fair.
Music Searcher -By artist, album or song title.
Music Web Hunter -Guide to major music sources.
PressPlay -Digital music service.
Rhapsody -Digital music leader.
World Records -A search engine for information about music.