MySpace announced a partnership with Snocap a music store backend provider founded by famous Napster founder Shawn Fanning.

The news that Samsung starts a music shop this week was not really exciting news. I do not think that Samsung's music store would be any competition to Apple's iTunes.
It is a very, very different story with MySpace.com. MySpace (Alexa Rank 6) has huge number of visitors and most of them are into music. To sell digital music to them is a perfect match. The mySpace music store is going to offer unprotected MP3 files. Major labels will have an issue with that. In the spirit of mySpace new artists will be selling directly via the mySpace music shop and over time major labels become soon obsolete.
The Web is maybe already the largest music label on the planet.

More details on the NY Times.
See also theSnocap site and on the MySpace site.