Is there any way to get the skin.xml to show a video clip of the game you want to play while loading/browsing the game...

Like let's say i want to see a clip of the game in action while browsing thru the games...what would I put in the skin.xml to do that?

Now let's say while the game is loading(How in default it says e.g. MS"Loading:HALO") How can i change the .xml so instead of the boring Loading screen it plays a preview vid of the game?

Where would I put the files?

I read the tut and FAQ, but they just talk about sin previews....

help is uber appreciated..