Fantastic plugin! Many thanks for sharing it.
When I use other plugins, I can look at the media_content_id that LMS reports to HA, and then use this value to automate playing that particular stream in a player. However, when I use the AccuRadio plugin, this doesn't work. It reports that id to HA, but sending that back to LMS doesn't play anything. LMS reports something like this (slightly redacted):
accur://www.accuradio.com/playlist/json/66xxxxxxxxxxxxxx0a/?ando=yyy&fa=null