Choice tile for music source (old, not shown)
What it is
An old tile used to pick the music source for a room. In this configurator version the code that draws it is never called, so it does not appear on any screen.
What to enter
Nothing. It is not shown.
What it changes
Nothing, because it is not shown. (It would set the room's music source, which changes the hub settings and the app at the next deploy.)
If it goes wrong
Set this on step 5, Room Devices.