Quote Originally Posted by diceman View Post
B) The NAS/SBT need rebooting in the event of a power outage (which is relatively frequent here although I guess I coudl live with it).
To avoid a corrupted filesystem on the NAS you should maybe consider something like an APC Battery backup to bridge the power outages. Power the router, the SBT and the NAS with it. They come quite cheap these days (sub 100 EU).

On the hardware side, I am a great fan of a Pi based system with an onboard DAC. They are easy to set up and very robust (i.e. they will run for weeks without any problems.)