How to I make liferea show this feed?

I like Liferea; it's great to check the Ubuntu Planet for interesting news and tips, new strips in my favorite comics, and the like. I'd like to keep on top of new Google tech talks (http://video.google.com/videofeed?type=search&q=label%3AengEDU&so=1&output=rss), but for some reason adding that doesn't break out into multiple entries. Firefox handles the feed correctly, so I'm fairly confident it's possible. Is there something extra I need to do in liferea, or a different program with better support?