The iTunes Store, run by Apple Inc., allows users to purchase a track online for $0.99 US. The tracks purchased use Apple's FairPlay DRM system.

Napster music store, which offers a subscription-based approach to DRM alongside permanent purchases. Users of the subscription service can download and stream an unlimited amount of music encoded to Windows Media Audio (WMA) while subscribed to the service. But as soon as the user misses a payment, the service renders all of the downloaded music unusable. Napster also charges users who wish to use the music on their portable device an additional $5 per month. Furthermore, Napster requires users to pay an additional $0.99 per track to burn it to CD or listen to it after the subscription expires. Songs bought through Napster can be played on players carrying the Microsoft PlaysForSure logo (which, notably, do not include iPods or even Microsoft's own Zune).

Wal-Mart Music Downloads, another online music download store, also uses DRM. It charges $0.88 per track for all non-sale downloads. All Wal-Mart Music Downloads are able to be played on any Windows PlaysForSure marked product. However, this music will not play on the Zune. The music does play on the SanDisk's Sansa mp3 player, for example, but must be copied to the player's internal memory. It can not be played through the player's Micro SD card slot, which is a problem that many users of the mp3 player experience.

Yahoo Music	MusicMatch	MSNMusic
MusicLoad	MTV / urge	MusicNow
BuyMusic	AOL Music	Virgin Digital
iMusica	Beon Music	Peer Impact
Sony Connect	Rhapsody	Wal-Mart
AOL MusicNow