Great add-on that does exactly what I want from it!

mouse wheel volume control

If you are using Firefox and YouTube then this is the one extension that you should definitely grab .

Makes youtube something better....EVERYTIME!

Jest super!

Funziona benissimo fa quello per cui è stato progettato.

Love it to bits .

Fantastic and reliable. Thank you !

Excellent add-on, easy to use and understand. Only have a few add-ons and this is a favorite and have it on all my computers . Really love the volume control . Keep up the good work .