Hi Matt,
I also viewed your source code to see why your slideshow isn't working for me and saw this in your HTML (below).
It looks like you have 2 references to SlideShow.js (there should only be one). One is pointing to "http://localhost", which as Daryll pointed out will not work for the general public. The other points to a relative path in the same folder which doesn't appear to be a valid file. Things should work once you get these files/paths/tags sorted out.
Thanks for using it on your site! Please keep your feedback coming.
-Will (Slide.Show project lead, Vertigo)
<script src="/themes/orange/galleries/Silverlight.js?Version=3.0.20611.960" type="text/javascript"></script>
<script src="localhost/.../Slideshow.js" type="text/javascript"></script>
<script src=SlideShow.js type="text/javascript"></script>