I have an older one of these units (the Jr, only 200MHz), and just saw they have a newer one out. This would make a great basic MD, throw it on an old 15" LCD with a VESA mount and you don't even see the unit!
http://www.norhtec.com/products/mcjrmx/index.html
http://www.norhtec.com/products/mcjrmx/index.html