Easy import of external excel file to populate fields

[mrjohnc]

I'm not sure how to explain this technically, this tool would be very very useful to mass upload content from organisations with large quantities of content if it was easier to mass import filenames, filenames on Commons, description, categories, licenses etc from an excel sheet.

I have feeling this may be possible already by converting the excel sheet to xml and using it as a save file but I can't find any step by step instructions.