Out of everything i've tried, Spotcast seems to be the only integration which actually works. Calling the service 'spotcast.start' works a treat, but I can't seem to work out how to get the voice pipeline to use this in any of its considerations.
#Possible for the voice assist pipeline to use Spotcast for music playing requests?
vapid nexus
spiral canopy
If you are trying to handle music stuff, you may want to take a look at Music Assistant 🙂 Think they are getting voice commands squared away for it. Otherwise you may need to write your own sentences and intent scripts to work with spotcast