Are there any other RSS Readers featuring a Slideshow through the articles than Google Reader Play?
Can be Desktop App, Browser Plugin, iOS App, etc. I'd rather prefer a non-webapp as I'd like to provide an RSS source within my local network.
This utilizes the Windows RSS Platform which automatically refreshes and download feed enclosures in the background.
If a desktop theme can serve as slideshow, then this is one way to achieve your goal.
The links in my post contain many pointers to more information and examples (and the comments are also useful).
Here are some resources that might help :