AirPlay not working to AirPlay 1 devices

Playing Apple Music from my MacBook Air, I can only connect to multiple AirPlay 2 devices (2 Airport Expresses and Marantz CD Streamer. If I select another device; all are AirPlay 1, although it appears connected, all of the connected devices stop playing. Only the laptop continues. When I deselect the AirPlay 1 device the AirPlay 2 devices resume playing.

Actually my laptop will no longer play over any of the AirPlay 1 devices, as an individual or multiple connection. Is this a Big Sur 11.7.10 issue ?

I can play on all the AirPlay 1 devices individually from my iPhone 14

Any help would be much appreciated