How does win10 change the default player?

  
Win10 default player if you are not used to it, you can refer to the following method to replace:
first open the start menu, click on all applications, enter the windows system folder after entering

open, below to find the default program , click to enter

After entering, click the default program you want to change, a menu will appear, then switch, here is the music player as an example

After the change, you will find the icon Replaced
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