Automatically mutes all inactive tabs.
.Here is the Mute all inactive tabs Addon Download for Mozilla Firefox web browser
Let you mute the Firefox browser.
Mute tabs with HTML5 media.
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Mute Tabs based of URL.
Mute newly created tabs
PHPIDS for WordPress
Allows the user to embed Vimeo movie clips with autoplay automute features by entering a shortcode ([vimeo])...
Let members mute their friends and shed unwanted items from their BuddyPress activity stream.
The lightest weight YouTube extension for WordPress. YouTube has a built in capabilities that enable...
Automatically mutes each new tab the instant it is opened.
Adds public transport commute times to Rightmove listings from the property to your work place
This extension allows you to auto unmute yourself on google hangouts.
Will mute Hulu when ads start. When ads finish can pause the video and play a tone. **FYI: Does not work...
One-click mute buttons for posts on Google+ (Google Plus)