So at work I have Windows XP and if you double-click the volume icon in the system tray, it brings up the whole Volume Control control panel, and you can just click MUTE right there. Windows 7 = downgrade!
I can't believe I'm the only one with this issue! So I was listening to music, volume was way turned up. Then I turned the music off. The a while later I'm surfing away and some site has an super obnoxious ad with a hidden pop-under window with this incredibly loud voice BLASTING me with...