Hi there,
I have trouble to get my little Naim Muso to work.
Setup is a NUC 5i with a 3TB HD where the music is on. I can see the Muso device and can enable it in setup. After choosing music (1. live radio, 2. titel from the HD, 3. title from Qobuz) it starts for about 5 sec and stops.
Worked perfect in the last years and I didńt touch the hardware.
At the same time Ím able to play via my ipad and the spotify app music over the Muso without problems.
Did you enable compatibility mode in Roon for the Mu-So and add it to the Apple Home app? (You’d need an Apple device for the latter, unfortunately, but this is just a workaround until it is really fixed)