Did you know Windows has the ability to control volume on a per app level? You’d usually control the volume by clicking on the speaker icon in your system tray. For the volume mixer, right click on the icon and choose the mixer. You’ll notice a window with options for your main playback device as well as each application that’s capable of outputting sound. In the example below, I have Firefox, and Winamp running.
Great song, if you’re wondering.
As an added bonus, if there’s a nasty sound blaring from you speakers and you don’t know where it’s coming from, the mixer is the place to check!