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The original was posted on /r/InternetIsBeautiful by /u/freemanjiang on 2025-04-28 22:20:18+00:00.

I built an open-source audio player that syncs any audio across multiple devices with millisecond precision.

No apps, no surround sound setup. Just a link and a couple devices!

Drop a track, share the link, hit play.

Every phone, laptop, or speaker joins a single surround-sound stage.

Works right in the browser—desktop or mobile.

Try it here: Beatsync.gg

Let me know your thoughts or suggestions!