The developer working on integrating network display functionality into GNOME Shell shared short video clip to the GNOME sub-reddit […] the feature adds a “screencast” button to the row of actions in the Quick Settings menu. Clicking this opens a modal picker where the user can select any Miracast or Chromecast compatible displays on the network.
Just whats been around tbh. Some old speakers with a cheap bluetooth amplifier board f.e. One of my flatmates added his PC speakers with subwoofer and we got a sourround system running along side it. Didn’t spend anything just connected whats been already around.