how do i uninstall mplayerx

If you got it from the Mac App Store or the developer's website, just delete the application.

If it was downloaded from somewhere else, it probably had adware packaged with it. Click here and follow the instructions, or if there’s a type of adware not covered by them on the computer, these ones. If you're willing to use a tool to remove it(you don't need to, but may find it easier), you can instead run Adware Medic; this link is a direct download.

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