Zune Team Getting Amnesty for iPod Use
My point is that the Zune will add DRM to songs to received songs that one could legally possess if the sender has the copyright and allows it to be kept permanently, so it is improperly adding some DRM in circumstances where it shouldn't. Your original seemed to suggest otherwise, so I thought I'd point it out since even though there's a good chance you already know, others might not.
I wonder if someone could reasonably sue MS for 'usurping' someone's copyright due to this. I'm reasonably knowledgeable about copyright, but not that knowledgeable.