Hello,
First thx for all your work.
I installed without worries on RPI2 (balenaOS 2.48.0+rev1), everything works in standalone mod.
If I activate the multiroom, the server part will stop.
Anyone have an idea ?
@triseaux, I also had issues with my RPi2B, since the rest of my devices are RPi3B I thought to put a card from a RPi3 in the 2 and that worked like a charm so I installed my RPi2B with the RPi3B image (balenaOS 2.60.1+rev1 my problems were solved… I have disabled the Bluetooth container afterwords since my RPi2 doesn’t have bluetooth. Maybe you can try the same thing!
Ho nice, i try this later and im back.
Thx for the trick
Realy thx, work perftly 
No problem! Hope you have fun with Balena Sound!