From the article, emphasis mine:
Steve Jobs announced Tuesday that he has asked the record labels to scrap their proprietary DRM software that prevents music from being shared, as he feels it's ineffective and merely hampers consumers from being able to listen to music how they please. Sounds good, right? Well, it's propaganda. Lost in his release is that that the largest source of proprietary DRM software is Apple, which prevents songs purchased from iTunes to be played on any competing player (and prevents the iPod from playing songs purchased from competing online music stores).
Cluelessness like this is why Rolling Stone should probably consider sticking to their own evil empire (i.e. pretentious music articles).