I tried to make a Sonos replacement using OpenHAB, Snapcast, Mopidy, Raspberry Pi Zero's and speakers from Amazon! (Total cost for each unit/room ~= £52GBP) and I'm really pleased with the result! :
Multi-room audio with Snapcast, Mopidy, and Home Assistant - Blog - Home Assistant Community
Build a multi-room audio system with Raspberry Pi — The MagPi magazine
Build a multi-room audio system with Raspberry Pi — The MagPi magazine
Multi-room audio with Snapcast, Mopidy, and Home Assistant - #40 by MartiAbernathey - Blog - Home Assistant Community
The next level Mopidy music client - Dirk Groenen
Mopidy Pummeluff - A music box for kids – confirm blog
mopidy Archives - Blogging to Nowhere
Multi-Room Audio System: Indoor and Outdoor Audio
Audio Control for DIY Stereo System(s) — Technically Wizardry
mopidy · GitHub Topics · GitHub
Multiroom audio project using mopidy, snapcast and pulseaudio - Share your Projects! - Home Assistant Community
The next level Mopidy music client - Dirk Groenen
Raspberry Pi As A Spotify Server With MPD Control | Hackaday
Perfect (and free) synchronous multiroom audio with Snapcast 🔊 - Share your Projects! - Home Assistant Community
Multi-Room Audio System: Indoor and Outdoor Audio
Turn Your Raspberry Pi Into a Home Music Server With Mopidy
The next level Mopidy music client - Dirk Groenen
Soundsync: an open-source Sonos alternative I built to synchronize and manage speakers in multiple rooms : r/homeautomation
GitHub - codrin-iftimie/sonos-mopidy
20 best alternatives to Mopidy as of 2022 - Slant
Perfect (and free) synchronous multiroom audio 🔊
Tutorial for making a DIY multi-zone Sonos-ish audio setup on the cheap. : r/raspberry_pi
