Looking at this a little more, it's not clear to me exactly how these materials would integrate with the existing Fireworks slideshow materials. I imagined that one would open up an FLA, save a new SWF after making the desired changes, then place the SWF in the correct folder within Fireworks' configuration files and be good-to-go.
The look of this is a bit outdated. It was apparently created for use with CS3. The Create Slideshow command no longer appears in CS6, so I'm looking at the CS5 version. Within the application's Configuration > Commands folder, there's a Create Slideshow.swf and a folder called "players". The "players" folder is where I'd expect to place a modified SWF file, but I don't see any SWF files here to replace.
My best advice is to play around a bit and see what you can find. The Readme.txt file includes this final bit of instruction:
For asisstance, please post questions at http://www.fireworksguruforum.com (specifically, the Fireworks Album creator/Create Slideshow forum) and we'll do our best to help you with general usage questions.
