I would like to be able to make use of the Windows 7 Library in Display Fusion for Desktop Wallpaper and also when using the DisplayFusion Photos Screen Saver. Similar to what others have suggested - I would create a New Library of say DisplayPhotos and point Display Fusion to that.
Here is a link which suggest Windows 7 Library support has either been implemented (and I am just having difficulty figuring out how to use Libraries) , or DF might soon support Windows 7 Libraries.
Looks like either that other topic got lost along the way, or we maybe weren't able to implement it for technical reasons. I'll look into it and I'll post an update when I find out what's happening with that request
We've just released DisplayFusion 5.1 Beta 11 (http://www.displayfusion.com/Download/Beta/), and it now includes Library support for the wallpaper. Just use the "Add Library" button after selecting the My Computer source.