If you have tried using Windows 7 to work and listening to some music at the same time, you may have found something strange - the music was interrupted now and then. To be more specific, every time there is a new sound, the MSN messenge sound, for example, the volume of the music will be reduced automatically.
So, is it a bug or something like this? Acually, it nothing but a quite humanized design. The idea is to avoid messenge loss because of the loud music. However, if you consider it as something useless, just treat it as a bug and resolve it with the following methods. But you cannot blame Microsoft for it.
* Right-click on the "Volume" icon on system notification area and hit "Sound"
* Turn to "Communication" tab
* Here you will see

* Check "Do nothing" and it's done.
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