Microsoft says " Windows Media Player 12 is included in clean installs of Windows 10 as well as upgrades to Windows 10 from Windows 8.1 or Windows 7." That makes me think it's not something you installed yourself, as you say.
Anyway, http://answers.microsoft.com/en-us/windows/forum/windows_7-pictures/how-to-uninstall-and-reinstall-windows-media/ed1f5daf-8142-4052-9a33-8eeda79b88ec?auth=1 shows where to find the feature and how to uncheck the mark in the list of active feature and reboot. But I doubt if that's comparable to a full uninstall. And you say that it doesn't show with you, not even in the list of programs that can be uninstalled after your installed it? That's strange.
What program is it that needs WMP?
I have upgraded to Windows 10. I have software that needs Windows Media Player. I've installed Windows Media Player 12, but still now luck. How do I uninstall Windows Media Player 12 from Windows 10. Windows Media Player does not show up as a feature that I can turn off. Everything I've read suggests turning the Media feature off, but it does not show in my list of features. Help!!!