No problem. This is essentially what Sonos charges hundreds of dollars to do, but ends up costing ~$150 for the server and ~$35 per client device (using Pirate Audio + RPi ZeroW). One thing I neglected to mention is that if you happen to have Spotify Premium, you can set it up so that Snapcast becomes a Spotify Connect output
I was in the exact same boat as you, but its pretty much there now. You can set a specific user group (i.e. Default) to have its recipes be public and then redirect index to that page.
Also I recommend upgrading because IIRC there’s a security vuln with that old version of Mealie