We recently added a video to the game. I ended up manually setting the “File or URL” property at one point to point to the appropriate video file. After we cooked a build, we found that it wasn’t working because the Media Player object pointed to
C:/Users/Paul/Perforce/PrototypeOC/Game/Content/Movies/Main_Menu_02.wmv
… even though that .wmv is, as you can see, inside our game’s Content folder.
It seems like it shouldn’t be possible for this property to hold an absolute file path … especially if it can be properly made into a relative path inside the game’s Content folder, as in this case.