Firefox - audio mute - warning  

Hi folks
just a warning that it's easy to mute audio on Firefox quite by accident -- unmuting in the video doesn't work. Not sure what key combos I pressed -- trouble of course when working with different language keyboard layouts simultaneously.

The ony way I could unmute it was to right mouse click on the icon on the taskbar which if you had hidden it !!! tough luck.

You should in the icon see a little loudspeaker embedded if audio is playing or muted.



My stupid error but I'm sure others might have fallen into this trap and it's not intuitive how to "repair the damage"

Cheers
jimbo