Why not just write this in python? or in html?
You' be surprised how many programs are written in html.
essentially all you are doing is displaying a series of png's or gif's etc- Id assume the code would be very simple. You could either set it for a timer or for next page with button. You already have a browser I assume? And it can run locally or via the web for auto updates etc.
JB SKaggs
edit:
Hey you know many browsers have plugins that do this automatically- firefox even has a 3d one. example:
http://www.instantfundas.com/2008/12/generate-slideshow-of-images-in-firefox.html <<< may not be what you want but there are a lot of options for this kind of thing out there.