Improper setting of Vista system audio properties leads to no sound in movies

        In the Windows XP era, what impressed me the most was that after using Super Jieba (or Kingsoft ShadowPad) to play movies, and then using other software to chat (or watch movies), these applications became "dumb" and could not be issued. sound. I did not expect this to happen under Windows Vista.
One day, after the author and my friend video chat on QQ, open KMPlayer and read "Spider-Man 3" and found that "Spider-Man" became a "deaf-mute", without any sound 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 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.
Then, another dialog box will pop up. Please switch to the "Advanced" tab and uncheck "Allow the application to monopolize the device".