Predray Application
It seems there have been some issues running the Predray applet with newer versions of the Java runtime. All openGL applets now have to be signed or something. In any case, I thought I'd post some links to download the application so you can run it straight from your desktop. This should have it run faster as well. I also have some fullscreen versions, so if anyone is interested let me know in the comments and I can package them up as well.