MacBook air connects to bluetooth speaker but doesn't play sound (post Monterey upgrade)

Hi - upgraded to Monterey yesterday. .Tried to play music through my Bluetooth JBL speaker today, and although it shows that it's connected, the sound only comes from the built in MacBook speakers instead of the JBL speaker.

This wasn't an issue with Big Sur. Is it a known issue with Monterey? I've tried turning bluetooth toggle on and off, restarting the computer, but nothing seems to help.

Suggestions? Thanks!