I don’t know about you, but it’s been ages since I opened up Window’s “Volume Mixer”. Last time I opened it, circa some time when Windowx XP was new, it wasn’t particularly useful (filled with individual volume controls for obscure audio components on my computer I didn’t even use). In Windows 7 it’s actually useful! You can pick the individual device and then pick the applications piping sound through. How is this useful? When I listen to Pandora I use it to mute the system sounds and my IM client’s alerts. It’s way easier than going into the individual apps and toggling the sound settings! Maybe this is common knowledge but I figured there had to be a lot of people like me that never bothered to look at the Volume Mixer.
Courtesy: Dana - How To Geek