I tried a Logitech Squeezebox Duet to get my mp3s from a NAS-Server on my stereo. It worked, but my PC (not NAS) had to be shut-on all the time, because a little server-programme was running all the time.
So I returned the Squeezebox.

I am thinking of buying a NP3500. But before I'll do that, I would like to know, if it can play the music from my NAS-Server via Router an DLNA all the time without having my PC switched on all the time.
So comparably with my SMART-TV that also can do this without any PC.