Chrome Confusion

I have been successful in tweaking the Chrome theme however, I’m getting slightly frustrated. I’m trying to use the Video post function found in the theme’s original template but I’m not figuring this out.

I’m pretty much a complete newb when it comes to this so you’ll have to bear with me.
I did some googling and exploring in wordpress and I think (from what i’ve gathered) you can use the meta-data to assign posts to various pre-defined areas in your wordpress theme. I’ve tried a number of combinations of key + value but it isn’t working for me at all.. If anyone has had any luck and can guide a newb such as myself.. I’d greatly appreciate it.