What am I doing (or saying) wrong?



Set-up: I have a SONOS Beam, linked to my Apple TV Box via the Optical Adapter HDMI ARC Cable. The idea being, when I'm watching normal TV I use the TV speakers and when I watch a film via Apple TV, I get my sound through my SONOS Beam. This works great!!



However, when I simply want to listen to music, whether it be Radio or a playlist,.. etc.

I say: "Alexa, Play Radio 2".

Alexa suggest she's found the station via TuneIn (or a playlist through Amazon Music) BUT doesn't play anything. I've checked the volume by playing something manually via my SONOS App on my phone.



NOTE: The Apple TV box is off.



Any advice appreciated, thanks.