I didn't say, that it is Jabum, that hides the folder. The folder is hidden, because either the skin or Jalbum creates folders with a dot in front.
The location hasn't changed: the files are still in the project-folder, but some are in this hidden folder.
If the intention is to hide the files so that the user does not edit them, then why is the "jalbum-settings.jap" file not hidden, which really should not be edited. But it makes work easier if you edit the "commments.properties" file directly.