thank you very much! That’s an interesting setup. I think it’s very fair that you don’t want to undermine Volumio’s premium model. I am also a premium user.
I still want to use the flexibility of Volumio in every room. I just want to automatically assign devices to different groups sometimes. And I sometimes want to integrate a Snapcast server that is not based on Volumio (I wrote a feature request for this).
Your explanations now give me an insight into how you control Volumio from the command line. This gives me a better starting point to implement my ideas.