(at same level as everything else) (see attached picture)

       made sure Firefox was set to Default (just like all the other browsers) (see attached picture)

Firefox 92.0.1 in Windows 10 Pro x64 will not play any audio. I have Opera, Edge, and Chrome installed and they all play audio just fine. I have done the following: - Disabled all extensions - right clicked the volume icon to open the volume mixer and made sure Firefox volume was set correctly (at same level as everything else) (see attached picture) - went into settings -> sound -> advanced sound options -> App volume and device preferences and made sure Firefox was set to Default (just like all the other browsers) (see attached picture) - Uninstalled / reinstalled firefox - Created a brand new profile, from scratch - Reinstalled my sound drivers and NVIDIA video driver - restarted windows How do I fix this problem?