The phatnoise website has listed them as "sold out" for a while now and I presume this will be permanently. My cradle just died on me. I'm going to take it apart to see if anything appears burned out on the board and make sure the little power switch that the DMS triggers when inserted is alligned correctly, BUT I wouldn't mind having a spare if mine is fixable. I better get one before I can't get one.
I see one ending in 15 hours:
http://cgi.ebay.com/Phatnoise-Phatbox-KENWOOD-USB-2-0-DMS-Docking-Cradle_W0QQitemZ300202763571QQihZ020QQcategoryZ39751QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
Good seller too, can't recommend the guy enough as everything I've had from him in the past shipped well packaged and worked out of the box.
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290212051106&_trksid=p3907.m32&_trkparms=tab%3DSelling