Devices that used to be smart way before all this "dumb home" stuff appeared.
You can put a DAC on a RPi, install squeezeplayer, and attach to the squeeze network for free today. I have done that exact thing in the last six months.
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.
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.
