How To Restore File Associations Of Windows Media Player To Default In Windows 7
Over a period of time you tend to install and uninstall third-party Media Players like VLC, GOM, AVS, Power DVD, etc. When you install these third-party software, each of this program take their own file associations as default player. Good ones usually gives you a choice whether to associate all media file extensions to it or not while installing the program.
But having said that, not all programs gives you a choice. They automatically take file associations and you end up with messed up file types for your Media playing needs. If you love Windows Media Player and would like to keep file associations with it, go ahead and follow these steps to reset all file associations with Windows Media Player in your Windows 7 PC.
1. Click Start—> All Programs—> Default Programs.
2. In the Default Programs dialog box, click on link “Set your default programs”.

3. In the list of programs, select “Windows Media Player”.

4. Then click on “Set this program as default”.

5. Click on “OK” to save the settings. This will restore all the file associations. Which means all your video and audio files will play with Windows Media Player by default.
In Step 4, you have choice to choose selected file type to play as default with Windows Media Player. You need to click on “Choose defaults for this program” and then select file types that you want to associate with Windows Media Player.