Mozilla Connect

Till that function is added you can use this addon as a workaround in the meantime:https://addons.mozilla.org/en-US/firefox/addon/sound-control/ 

Till that function is added you can use this addon as a workaround in the meantime:https://addons.mozilla.org/en-US/firefox/addon/sound-control/ 

Till that function is added you can use this addon as a workaround in the meantime:https://addons.mozilla.org/en-US/firefox/addon/sound-control/ 

This seems to be a similar feature request that is more popular, you should vote for it so more people see it and hopefully something like that gets developed:https://connect.mozilla.org/t5/ideas/better-notification-of-active-quot-playing-quot-tab-on...

With that we need:a key combination to switch between all audio/sound playing tabs. Similar to the normal combination to go to the next/previous tab.And / or at least a combination to mute all sound playing tabs, e.g. ctrl.+shift+M.