Wal-mart's PC-only, web-based service is now available for testing, with a $0.88/song price tag and rights similar to those of Apple's iTunes Music Service ( 3 PC copies, 10 burns, unlimited digital music player transfers), it may well provide some competition.

Of course, it is windows only right now, due to the Windows Media Player 9 requirement, it can't be used with non-WMP compatible MP3 players, and won't work with the iPod.