They've been promising this product since Jan of 2003. It's vaporware as far as I'm concerned until it actually starts shipping. When they announced in at MWSF they said it'd start selling in March for $199. It's now Dec 2003, and it's yet to ship, and people are selling pre-orders, but now for $250. Infact, MacSense was selling preorders for this device in January.
If you really want to play your music out of iTunes, buy a $199 TiVo, and spend $100 for the Home Media Option. You get to play music from iTunes on your tv/stereo, and you get the bonus of TiVo. Or if you want a stand alone unit (doesn't need a TV), buy the Audiotron from Turtle Beach or the SqueezeBox from Slimdevices, both are around $300. Both have Mac software, and both can get your playlists from iTunes, and both are shipping, and have been for quite some time.
Brian