Noise is an experimental Firefox add-on that adds sound support to Firefox. It is completely event driven meaning that it works by choosing an event, like a click, open tab or download done, and selecting a sound that should be played when the event occurs.

A set of about 20 default events is enabled by default which can be configured to play sounds. In addition to that new events can be added to the Firefox add-on which is unfortunately not as easy as it sounds because of the way new events are added.

Every wave file can be added as a sound in the process. The default beeping noise can also be replaced by other sounds. Users have to use the Events Reference to add events that are not already added by default. It might take a few tries before everything starts working like it should but it’s probably the best way to add sound to Firefox.

The Noise add-on is an experimental Firefox add-on meaning that it cannot be installed from the official Mozilla page without logging in first.