Let the hive mind of Engadget get that for you.
"For a long time I have been searching for a portable device where I can store all of my CDs in MP3 format and stream the songs wirelessly to my HiFi system. The portable device must I've tried FM transmitters, they all suck. I don't want a docking station. Any help? Thanks!" have a display so that I easily can scroll through the playlists (I don't want to use a TV or monitor). I suppose that there must also be a second device that is connected to the HiFi system that would receive the wireless streams from the portable device.
This feature has put the 360 way above the PS3 in terms of being a multimedia station. The 360 also has better games comming out and slightly better graphics from what I've seen so far even though the PS3 isnt out yet.
I don't want to be stuck paying $200 dollars more for less of a machine. This feature has clinched my decision to buy a 360 rather than my beloved PS3. I never though I'd be saying this a year ago.