I am attempting to detect when a device is being used to play via a remote volumio device in the multiroom group. I have looked through the Web API and the REST API documentation and cannot see a way to detect if a device is playing as a ‘slave’ unit. The state appears to report the devices local playing state only using the getState / pushState / pushMultiRoomDevices with no state change reported when playing from a remote device.
Any pointers would be greatly appreciated. Multiroom is working great btw.