Locate/Export data from Omeka+Mediawiki

Hi all!
I am newbie and I am facing an Omeka/Scripto system set up by someone else. I would need to locate files trancsribed in mediawiki and extract (in bulk) them together the metadata stored in Omeka. I see this post: http://omeka.org/forums/topic/locating-files-trancsribed-in-mediawiki

...but I am wondering whether after three years, it could be some more "dummies" solution, in order to do that.
Thank you.

That's probably still the best approach

Ok, thanks for your reply.