None of that makes any difference, apparently, because it looks like I can't get the front page any wider than it is or remove the sidebar. Wordpress sucks. So even if they were scaled to awesome proportions, the embedded video isn't going to be any bigger than around 550 when it gets posted anyway. In order to post them at a bigger size I would literally have to build a new front page. I'll certainly do that at some point, but it's not gonna be anytime soon.
But in the meantime, what's there is much bigger than the youtube embeds, and waaaaaaaaaay better quality. Go check it out, I've got all four episodes up there now. :D