Since this is in beta I havnt worried about seperate cpu licensing yet so I have it installed on multiple computers 3 at work and 5 at home for instance Im on a mac now with it installed under paralles  What I do is this
under the filter forge folder that Vladimir listed  
there will be tow folders
My filters and System
My filters is where you copy --Your filters for the standard library
go into the system folder and then into the library folder  This is where all fo the ffxml files should be listed copy them to the respective same folder on the other computer
They may not appear until you update the library structure by connecting online 

lets all whine for a wine port