Right now, the framework has not been packaged as a set of versioned binaries so if you want to test drive it you can get the latest source from the Subversion archive hosted on SourceForge.
Version 1 is very close to being built and released, so watch this space!
Project summary: http://sourceforge.net/projects/jfdi
View source: http://svn.sourceforge.net/viewvc/jfdi/trunk/
If you have the Subversion client software installed then you can get the latest trunk on your machine by running the following command:
svn co https://svn.sourceforge.net/svnroot/jfdi/trunk jfdi