Microsoft's Zune will not play protected Windows Media Audio and Video purchased or "rented" from Napster 2.0, Rhapsody, Yahoo! Unlimited, Movielink, Cinemanow, or any other online media service. That's right -- the media that Microsoft promised would Play For Sure doesn't even play on Microsoft's own device.
That conclusion was presented by absence of evidence, so there's still a slim possibility Microsoft may make a turn around before it hits the market. That seems unlikely, however, and many people looking to stick with MS for the DRM compatibility may find themselves sorely disappointed.