I use the following custom component quite successfully for lots of things;
I have just tried to play some music with a target of the multi room group (setup on alexa app) but it doesn’t play;
https://github.com/custom-components/alexa_media_playe
service: media_player.play_media
data:
media_content_type: SPOTIFY
media_content_id: Send me on my way
target:
entity_id: media_player.everywhere
It works fine if a target a specific alexa, feels like it has something to do with issuing multiple spotify streams perhaps?
Can’t seem to work it out, anyone done this sucessfull?
Sam