I am not a heavy Chrome user so I was disappointed when I didn't see the mute tab option on the tab context menu. I noticed that clicking on the speaker icon on the tab allowed me to mute / unmute a single tab (which is awesome). I think it would be more discoverable if there was also a mute tab menu option next to the mute site option on the tab context menu.
@vineydhiman There is a difference between mute tab and mute site. I don't want to mute a complete site which turns off audio on ALL tabs for a specific site. What I want is the ability to mute a specific tab. Currently you can only do this by clicking on the speaker icon in the tab. It would be easier to discover if there was a "Mute tab" option to do the same thing.
4/13 Update: Just got pushed a new version and the context menu says mute tab instead of mute site. :)