But I suspect that once the Receiver's player software is running, the ARF image is probably never accessed again, so a quick and dirty (slow and inefficient) NFS implementation may be very feasible for this.

True. However, for some people, this would be a relatively frequent ocurrence, as the Receiver must re-grab the software each time it loses electrical power. At my house, that would be in the neighborhood of once or twice per week.

Mind you, this whole idea is really not even for me at all. Since the Jupiter is still safely humming away on my server shelf, I actually have no need for the Receiver-on-the-empeg feature. I was just thinking about what an interesting and challenging project it would be...