One person loads a song from their own computer and shares it straight to everyone in the room, browser to browser. Nothing is uploaded to any server. Playback stays in sync, and it all vanishes when you close the tab.
Beta We’re still working out the kinks. On some networks the connection won’t link up. If that happens, try again or have the host re-share.
You must own the rights to anything you share. MP3, M4A, WAV, OGG and FLAC all work. Nothing is hosted: you seed from your own device.