Win7 batch settings file association

special love to play software, browser I downloaded n, the player I also tried a lot of different, each time you replace the software, you found, hey, the file association is disordered. Now even the input method is secretly setting the default for you, and there is a domestic download software that is associated with all the files in the user's computer. …… Well, talk about how to change it back today.
In the newly installed system, Windows 7 defaults to open AVI, MP3 audio and video files are Windows Media Player 12 (WMP12), but later installed XX video and XX playback, the default program has changed, how to change back How to find these files, right click, open the way to select WMP, and then set a default open program? In fact, do not, look at the following method, very simple, take WMP 12 as an example:
Click Windows7“Start&rdquo ; button, select “ default program & rdquo; in the pop-up menu.

Select "Windows Media Player" in the list on the left, and then click on the bottom right corner to select the default value of this program.

At this point, the system will go to the setup program association window, wow, a lot of things:

Okay, so you can set up in batches.
This method is the same in both Windows 7 and Vista. Microsoft has left a "back door" for its own software.