As far as I know myDVD Slideshow also creates the slideshow in a movie on the DVD. Just look at the Video_TS folder on the DVD, it contains the vob files of the slideshow movie. The jpg pictures are simply archived to the DVD, I don't think they are used at all when you show the slideshow. You can copy the vob file from the DVD to your computer, rename to mpg and play them with WMP. I believe EMC8 behaves the same way.