Recording a video stream from flv player

Hi, I'm trying to record a clip from an swf player/stream.

Here is a sample clip: http://www.aifestival.org/audio-video-library.php?menu=3&title=2&type=news&...

I've tried a screen capture with Snapz Pro X, but could not get any picture. Only audio was recorded.

Any ideas on how I can do this?

Thanks.