Mute Inactive Tabs as the name already suggest is a browser extension that can automatically mute all the sounds from all your inactive tabs. Sometimes when you open a webpage a video (playlist) starts playing automatically and it can be quite annoying if you need to manage multiple pages of this type. Mute Inactive Tabs can help!
It will automatically mute sounds from your background tabs. No user interaction is required, you simply have to install and enable the extension,