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CloseNoise Control 17
by Geoff Lankow
Shows an icon in the tab of each tab currently playing an HTML5 video or audio. Clicking on the icon mutes the videos/audio.
This feature is now available in Firefox, and Noise Control has been discontinued.
This add-on is not compatible with your version of Firefox because of the following:
- Add-on has opted into strict compatibility checking.
About this Add-on
It also shows an icon when a plugin (such as Flash) is active on a page, because there's no way to tell if a plugin is making noise.
This add-on will not be maintained post-Firefox 42, which includes very similar functionality.