If I need it… I’ll make a write up and automation for something like this with automation scripts:
But, Pulse Audio had the ability to list systems a “source” and a “sink”. Network was baked into it. So if anyone is curious, the computer part of a Sonos, Amazon Echo, Google home, etc… with the room control implements PulseAudio. If you want to play music in one place or separate channels of audio via network, THIS is what I would use. And yes, with Pulse Audio for windows it can stream to Pi’s (or anything like it). I recommend a DAC for each sink source however.