Another slideshow program people may want to look at:

http://www.asterius-mediaworks.com/en/description_photoslide.htm

I'm currently using their Dr.Tag program to manage metadata in my MP3s. It's by far (by FAR) the best tag management/editing program I've seen to date. (ie. and I've heavily used: MP3TagStudio, Tag&Rename, ID3-TagIt)

I haven't tried the slide show program yet, but will soon. I want to see a list of transitions and they don't really provide a complete one on the web page. For a photoframe, you just have to have the "Ken Burns Effect" (the Pan and Zoom + Crossfade Apple uses in their photo screen savers).

Bruno