pgdecrypt doesn't work with the latest dlc (06-28-2012) for "Seinaru Kana: Orichalcum no Na no Motoni". This free DLC contains 9 data files but only one of them is encrypted (336713CC.EDAT) and pgdecrypt can't decrypt it.
also forgot to ask you about one thing! what do you think about possibility of generation of KEYS.BIN files for PSOne Classics without license files (it doesn't matter on PC or PSP)? there are a lot of links to retail packages (PKG files) for undumped PSOne games around the web but it is impossible to create a KEYS.BIN for them at that moment...