Users who browse a lot with Mozilla Firefox have already noticed that it has no sounds associated with each of the events that are happening (open windows, popups, close, block a window, etc.). If you want this to not continue and you want to customize your browser a bit, what you need is Noise.
Noise is an extension to add to Firefox that will allow you to associate audio files in WAV format to the different events and actions of the browser. Of course, that WAV file can be any of the ones you have on your hard drive.
Noise only works applied for Mozilla Firefox 3.0 or higher.
You can free download Noise 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.