Vista audio property settings lead to QQ video can not watch movies

Windows Vista system can not watch movies after the emergence of QQ video, this has also been the phenomenon in the XP era, in fact, as long as the easy settings can solve this problem.
In the Windows XP era, what impressed us the most is that after using Super Jieba (or Kingsoft Shadowmaster) to play movies, and then using other software to chat (or watch movies), these applications become "dumb". Can't make a sound. I did not expect this to happen under Windows Vista. Here is a netizen experience, you can refer to it: One day, after chatting with a friend on QQ, open KMPlayer and read "Spider-Man 3" and found that "Spider-Man" has become a "deaf-mute", no Any sound is emitted from the system. Check the speaker cable, etc. are not abnormal, is it KMPlayer exclusive audio channel? This inevitably reminds me of the super solution. However, after the inspection, no abnormalities were found. After some toss, I finally figured out the reason for the incident, which was originally caused by improper setting of the audio properties of the system. The solution is as follows: Right click on the volume icon in the system tray (lower right corner of the screen), select "Sound", switch to the "Play" option in the pop-up dialog box, and then double-click the "Speaker" icon.

Figure 1 Speaker
Then, another dialog box will pop up. In this case, please switch to the “Advanced” tab and uncheck the “Allow the application to monopolize the device”.

Figure 2 Settings
Tip: When the user cancels the "Allow applications to monopolize the device" checkbox, the checkbox for "Prioritize the exclusive mode application" below will be automatically canceled. No additional settings are required by the user.