Crazy XML video effect - what's going wrong?

Hi all, I’ve managed to follow the XML slide-show tutorial and (thanks to a thread on this forum) added a nice little border re-size to it but now I’m stuck again.
I’m trying to load an .swf (containing an .flv) using the same method as the images are loaded but all that happens is some crazy flickering. Why would this be? Here’s the example (it’s the last thumbnail) and here’s an .fla containing the code I’m using.