I originally thought it was short, too. But I noticed that after I let their page sit for a while I went back and it looks like the FLV kept loading...I timed it and it looks like the loop fully loaded lasts over a minute!

I am going to experiment with a smaller colour palette, though. I am also going to try rendering the video at 15fps instead of 30fps. However, I still get the feeling I might not get the same effect as theirs.