Are we talking about syncing playback between users (devices) on one server, or is it more about attempting to sync playback across multiple servers.   I can think of a way to sync playback across multiple devices connected to one server.  But, I'm not entirely sure about syncing playback across different servers, that might need a 3rd party app, and hosting... Maybe? 🤔   Inside one server, where users are on different devices, the playback sync might be easy enough... N