I ran into some trouble when I placed this plugin in the SU plugin folder. I thought this solution might help others.

"LibFredo6 4.3c - 31 Jan 12" is the name of the folder that I unzipped and I placed in my plugins folder. But that didn't work. You have to drag the contents of the "LibFredo6 4.3c - 31 Jan 12" folder (LIBFREDO6_Dir_43 and LibFredo6) out of that folder and put it in the plugins folder.

THanks so much for this wonderful plugin!!!