ondaire is self-hosted, synchronized audio for your whole home. Drop one small binary on each device — they discover each other and play in perfect sync. No cloud, no accounts, no config files.
No config files, no database, no message broker, no account. Drop a single static binary on each device — a Raspberry Pi, an old laptop, your NAS — run it, and it just works. Prefer a guided one-liner, Docker, or a DIY ESP32 speaker? There’s a clean path for each.
See all install options→
Every node serves the same web app and proxies to the rest — open it from any phone or browser, with nothing to install. Group rooms, balance volume per speaker, browse your library, share a queue anyone can add to, watch live per-node stats, and reskin the whole thing with a single click.
Tour the interface→
Anyone can claim “perfect sync.” We put a microphone in the room and recorded two speakers for ten minutes: a median 84 µs apart, with 99.5% of bursts inside half a millisecond. See how the network jitter, packet loss and clock drift get solved — with the graphs to back every claim.
See how it works→Every quote below is entirely fictional — they never said any of this, and several of them predate electricity. Portraits via Wikimedia Commons.
“I could not hear a single one of my rooms — yet they played as one. Magnificent. I was, however, not consulted.”
“Setup took less time than a cadenza. One file, no fuss — even a prodigy could manage it.”
“Every voice entering at precisely the right instant, in every room at once. Counterpoint, but for speakers.”
“It’s not the notes you sync, it’s the ones you don’t. ondaire gets the silence right in all five rooms.”
“No cloud, no accounts, no scat about subscriptions. Put it on and the whole house swings.”
“I want it all, I want it all — and I want it in every room. Darling, it delivered.”
“’Scuse me while I sync the sky. Kitchen, hallway, garage — all phase-locked. Far out.”
“Dearly beloved, we are gathered to play one song in every room. No latency, no cloud. Just the music.”
Yes — I used Claude for much of this code. No, it isn’t vibe-coded AI slop. The architecture, the clock-sync math, the wire protocol, the trade-offs behind every fix above: that’s my thinking and my experience, and I know and understand pretty much every line that ships.
I used AI the way you’d use any good power tool — to get past my own laziness and move faster, not to outsource the judgement. If something in here is wrong, that’s on me, not on a model.
Grab a build for your device, or read the user guide to see the whole app first.