I don't know if this will help with a least one small point but make sure that the media you are using doesn't have punctuation in it's name. When I was trying to get the back-glass video for Bally's Wizard table to display rather than a static image, I suddenly realised that the back-glass video was called Wizard! (including the exclamation mark). When I renamed it so that It didn't have the exclamation mark, it displayed just fine.