Play mpg/m4v files in oF?

Hello! Learning the basics of oF from a tutorial and trying to play a .m4v video and then a .mpg file and getting this message in the console:

[ error ] ofDirectShowPlayer: Cannot load video of this file type. Make sure you have codecs installed on your system. OF recommends the free K-Lite Codec pack.

I’m on Windows 10 and do have the K-Lite Codec downloaded (from the recommended link on the website’s setup guide) and it’s at C:\ProgramData\Microsoft\Windows\Start Menu\Programs .

Now, the codecs must exist somewhere on my computer or I wouldn’t be able to view them, right? So how do I get oF to find them?