All-rooms audio: The Bluetooth option?
It only occurred to me over the weekend that my all-room audio quest might be solved by having a Bluetooth loudspeaker in each room and streaming music from a phone – which would be the remote volume control and track selector too.
This avoids the need for a Wi-Fi network.
And there seem to be DAB radios with Bluetooth interfaces.
I wonder if there are some with control by phone?