how your Nuc is connected to the network?
Wired LAN cable.
how are you connecting to the Nuc (iPad, PC, phone?)
iPad application (version 1.6.00416).
What output device is the Nuc connected to?
USB DAC (PS Audio DirectStream DAC via USB cable).
Does your ROCK system stop when a song starts, or does it just stop running by itself?
No, it looks like there’s a random problem.