Im already using my Pronto 9600 for this same application...
Not as big, but I can use it wirelessly over my G network walk anywhere in the house or yard, and serve up Sat. radio, or music from my 2 terabyte server it just fine... Or even movies.... or picture slide shows...
Doesn't seem to me that Its really anything new, except for the fanless part..
Oh and at about 1/10 the price...