Why is the movie in this blend file, blank? So demonstrating my considerable skill (not) I failed in my attempt to follow this tutorial.  Around the 7:45 mark, he says we should be able to press 'P' (to enter game mode) in order to play the video, and well, its not working.

I don't know how the few differences between what the tutorial guy did and I did could cause this, and I clearly have not learned the skills if I can't find out at this point, so  I'd appreciate any help!

The blend file can be found at pasteall.  Do note that I refer to the folder "resources" available in the zip file in the youtube description.

(Python: Also, if you want to modify the script, copy/paste the character they used to indent, for me, tabs and white-space didn't work.)
I figured it out: Your path to the movie was wrong i.e. not relative. So while pressing P you see the movie. In attached screenshot you will see that I changed the path to //Resources/Movie.wmv. "//" means that blender starting to looking for you movie at this folder where your .blend file is. I may can upload you the project file, too. Just write a commit.