When I look at it I see a PGM folder and the file names are in the format of name.pgm.
In using the PGM folder I have been able to successfully (at least apparently) load the flash card and read the programs.
I am still having some trouble with some of the files that were on the web site that were user patches. Undre the "main" heading. From what I can tell it may be the numbering in the program itself.
Still working on it and thankfully getting closer.