I decided to try and install the RPi image on a RPi2 to see if it was my HQ Player server that was not properly configured. Upon booting it and DAC connected, the HQ Player found the NAA right away in both IPv4 and IPv6.
The Pi2 is not powerful enough to work as an NAA with DSD256, this is the reason I'm using that Acer Aspire Revo R3610. I really want to make it work with SnakeOil OS and will try and help to give you info as much as I can.
Only problem is that the author of the NAA image (Signalyst) disabled SSH so I cannot use Putty on it... And most likely won't have the password to log onto the OS...
Thanks
Do