Windows 7 has a sweet but little known feature called the volume mixer. The volume mixer allows you to individually adjust the volume of any application that is currently running and capable of playing sounds.
For instance: Let’s say you have Live Messenger, Firefox, Word, and iTunes running. You’re listening to music on iTunes while writing a paper on Word. You want to be in contact with your friends on Live Messenger, but you don’t want to be bothered with the different sounds Live Messenger makes (like users coming online). You can use the volume mixer to mute Live Messenger but leave the other programs sound levels alone.
Individually adjust running programs’ volume
- Click the volume icon next to the date and time in the taskbar.
- Click Mixer at the bottom of the volume adjuster.
- Now you can individually adjust the volume of any of the running programs that are capable of playing some sort of sound.