How does Win7 unify the way audio and video files are opened

Today, few Win7 users only download one video player, usually there are more than three, one system comes with Windows Media Player, a universal player for watching local video, such as storm video, fast broadcast, etc. Another one is to look at Internet TV, like PPTV, PPS, etc. If you download an audio and video file from the network, because of the different opening methods, you often don't know which player the system will use, which not only causes The memory is occupied and the network speed of the system is greatly affected. Therefore, it is necessary to unify the way the audio and video files are opened so that it can be played only with one default player.
Below, we take the Windows Media Player that comes with the Win7 system as an example to explain how to change the way all audio and video files are opened to Media Player.
First, on the Win7 system, click the Start button, select "Default Program" in the Start menu, the operation is as shown below:

Second, then in the pop-up Control Panel dialog box, Select the "Set default program" item, then on the pop-up panel, select the Windows Media Player software, then click on the bottom of the "Select the default value of this program".

3. At this time, an audio and video file format will be popped up on the system. Select the audio and video file whose suffix name you want to modify, and then click the “Save” button.

This way, whenever you download audio and video files from the network, after double-clicking, the system will be opened with Windows Media Player, and other players will not be able to take over. It doesn't take up your Win7 system memory, and it won't add any operational trouble to you. Isn't it great?