That's why I stick with the squeezebox ecosystem.

Open source server which runs locally. The hardware is long since discontinued (but plentiful and easily available on craigslist etc) and it can never be obsoleted as everything runs locally.

Plus Squeeze Network (still free, still working) for Pandora, Spotify, or other network services.

Have you tried squeezeplayer on a RPi with a DAC? It works great. I have one alongside my original Squuezebox. They sync perfectly for multiroom audio.

With a DAC, it runs fine on a Zero. Cheap.

It would be great if they gave the hardware away for free too. But alas, the evil company wanted to make money. Those pirates.

And that's how it should have been.

Let’s make an open source Sonos clone and call it Fauxnos. It can be powered by a raspberry pi integrated into a speaker running mpd.

Who wants to join my git repo?

I've been running that system for a few years (with control via MALP or ncmpc mostly). Works pretty well.

do you have a keybase.io ID? I’m going to kick this off as my first 2020 project

I’ve been doing it with ROAP, RTSP & MPD on a rPI for the past ≈5 years, I call it Cantus.