How to Make Windows Media Player Default
To make Windows Media Player the default player for a specific file type:
Open Windows Media Player.
Click on the Tools menu and select Options.
Click on the File Types tab.
Check the box next to the file type you want to associate with Windows Media Player, then click on the Apply button.
Click on the OK button to save your changes.
Alternatively, you can follow these steps to set Windows Media Player as the default player for all file types:
Open the Control Panel.
Click on the Programs category.
Click on the Set your default programs link.
Select Windows Media Player from the list of programs, then click on the Set this program as default button.
Click on the OK button to save your changes.
And if this article about How to Make Windows Media Player Default hasn't satisfied you yet, you can watch the video below.
That's all from SmashinGeeks, see you in another article. ^^