Simply don't play the youtube video if you don't want to hear it. Or go to the microphone icon on taskbar and click mixer and then turn off the sound to your browser.
Okay. And i don't have a mic icon?
Also I made another tut.
[ame=
https://www.youtube.com/watch?v=S8BKQ2Ev-Kc]YouTube - Ngu Tutorial - How To Make vBux[/ame]
I donno if it will help or not. Lol