Home Sync

Demo Promotional: https://youtube.com/shorts/H111MkSlUwk?feature=share

Same song, every room, in perfect sync. Try it now!

Updates:
Memory — server streams tracks instead of loading them whole. 100 MB track, 4 devices: 429 MB → 43 MB

• Network — catalogue no longer resent every second. 300-track library: 56.5 KB/s → 1.1 KB/s per client (51×)

• Startup — library scan streams its hashing. 17 MB file: 42 MB → 34 MB peak

• Timing slider — now works during YouTube; previously changed the number and nothing you could hear

• Security — capped concurrent downloads; bounded a crafted-MP4 scan stall (2.0 s → 0.5 s); patched h2 (RUSTSEC-2026-0258)

• Features — house-wide volume, shuffle, repeat, saved playlists

Improvements:

• Rounded corners with transparent edges — reads as a card, not a rectangle

• Device glyphs (speaker, kitchen, TV) so the three lanes look like different kit

• Tighter composition, closing the dead space in the middle

Room-wide volume

The volume popover now has two sliders — Everywhere and This device — plus mute.

The key decision: the room's gain multiplies each device's own rather than replacing it. Turning the house down keeps whatever balance you set between a loud kitchen speaker and a quiet TV. Mute stays per-device — it means this one goes silent, whatever the house is doing.

Shuffle, repeat, playlists

• Repeat cycles off → all → one on one button.

• Shuffle keeps the playing track where it is and shuffles what follows. The order is held, not re-rolled at each advance — a shuffle that picks randomly each time can play the same song three times running. The test asserts the property directly: every track once before any of them twice.

• Playlists are named queues that survive a restart (the test kills the coordinator and restarts it to prove it). Stored as content hashes, not filenames, so they keep working when files are renamed or moved, and drop only tracks that genuinely aren't there.

HomeSync — play the same music, in time, on every device in your house.

• Synchronised music — every device downloads the same file, verifies it, and plays off one shared timeline

• YouTube together — each device runs its own player; HomeSync keeps them lined up

• Browser-based — no app, no account, no cloud. Devices join by opening a link or scanning a QR code

• One binary — 8.5 MB, self-contained. Runs on a laptop, NAS or Raspberry Pi

• Works offline — your LAN, your files, your machine

• Quiet drift correction — a device running fast is nudged back by a fraction of a percent instead of restarting the room

• Per-device tuning — timing offset and a 5-band equaliser, saved per device, so the late TV and the boomy kitchen speaker each get their own fix

• Multiple rooms — kitchen plays one thing, bedroom another, from one coordinator

• Honest status — one line telling you whether the room is actually together, and which device isn't

• HTTPS and room secrets — invite links, rate-limited joins