Hello Tony/ynot,
Long after your add-on was released, Google made it easier to control media players.
Yesterday I experimented with the Google / HA (local install not Nabu Casa or Docker) out-of-the-box and I have basic pause/resume & volume working.
I know that your add-on adds a lot more.
My question … with the newish capabilities from Google Assistant for controlling media players would it be feasible to use their capability without having to go through Dialogue Flow?
If the HA built-in capability include treating LMS favourites like Input Selectors then I think I would not need anything more and am tempted to see if I can add that into the standard HA.
Then I could say something like
set input to preset 4 on bedroom radio
to play BBC Radio 4 on a bedroom Squeezebox.
(dupe of my slimdevices forum post
https://forums.slimdevices.com/showthread.php?109273-Announce-LMS-Controls-Google-Home-Google-Assistant-Voice-Control-of-LMS-Players&p=1010005&viewfull=1#post1010005
)