Audio not working Firefox (Solution)

Sometimes with Linux the solution is a dumb little thing that you have not idea why that it got messed up in the first place.

This is one of those times. Sharing for those find themselves in the same situation.

Issue: No audio in Firefox but every where else on my computer.

Knowing the issue was isolated to Firefox browser so I tried all the tricks you normally do in the Browser, clearing cookies, checking all the auto-blocks, mutes, permission, I even got down to check config settings. Nothing.

Tried basic system sound settings in the task bar. Everything fine.

Turns out in Nobara's plasma sound system settings, applications and even the individual browser tabs can be muted.

I have no idea how that happen. Un-muting that little button that fixed it.

Great to know it was on the system level but now I'm left confused as I don't understand how did the system remember to keep Firefox muted even when I unintalled/reinstalled the browser and restarted the pc....

TLDR
Go into your PC's expanded sound settings (not the little settings in the taskbar) before blowing up your browser settings.