I have created something similar using Snapcast, gmrender-resurrect, MPD, Home Assistant, Jellyfin and Navidrome. gmrender-resurrect makes "casting" possible fr

I have created something similar using Snapcast, gmrender-resurrect, MPD, Home Assistant, Jellyfin and Navidrome. gmrender-resurrect makes "casting" possible from the phone. This provides many different options but the core of it all is Snapcast. It is great.