Perhaps you've already tried this, but if not then I'm optimistic this will fix it for you: - go to about:config page in Firefox (load it like you would a we

Perhaps you've already tried this, but if not then I'm optimistic this will fix it for you: - go to about:config page in Firefox (load it like you would a website with URL 'about:config', and accept the warning to proceed with caution) - paste 'media.setsinkid.enabled' into the search bar at the top - default setting is false, click the button on the right to toggle it to true - reload google meet, hopefully you'll now be able to choose non-default audio output (I think non-default microphone can be chosen even without this toggle?) That's a relic of the way in which the bug you linked to was fixed, and there is a (still open) ticket requesting that the default by changed from false to true here: https://bugzilla.mozilla.org/show_bug.cgi?id=1498512 https://bugzilla.mozilla.org/show_bug.cgi?id=1498512 (edit: there's one comment in that bug I linked saying that audio worked with Google Meet's pre-call test noise, but not on an actual call itself. I can't test myself right now, but if I've raised hopes falsely then apologies!)