My favorite digital audio receiver just added support for Zune Marketplace, Napster, Urge, Wal-Mart, etc. and enhancements for iTunes though they still won't play Apple's own DRM'd music (something Jobs left out he won't license).  Finally, my little white Sonos boxes aren't sitting in a Zuneless island.  Every time I think I'm done with DRM'd music services, they bring me back in.  I have to say though, I'm increasingly impressed by Rhapsody's integration with the Sonos.  It makes me wonder, why shouldn't all music services offer a network connected version, similar to what Napster is doing today?

Also note to music services - not everyone listening to your service is a twentysomething head-banging, ultramegalophile monster mashup music culture listener.  Take some cues from  XM's "Flight 26".   I like my hard-core, but not when the kiddies are around.  Families want to listen too.  That's a note to Sirius as well.