applet weirdness on AOL and IE

I'm trying to figure out what I've done wrong. Anfy has these interesting applets that you can try out on your site (before you poay a registration fee). I got one to work on my site via Netscape, but for AOL and IE I get an error message: "...com.ms.security.SecurityException. . ." I'm sure it's my screw up but I'm in the dark about this one. The url where I'm experimenting: http://members.xoom.com/songslinger/normal.htm Thanks much!