* Attempts to use the tool on items that don't have DjVu, PDF, or JP2
Zip files will now fail. I'm not sure what people who were attempting to
make DjVus of MP3s were thinking, but they'll get a nicer error message
now.
Apart from the file format, which was under some patent issues until
last year and should be soon be available to Commons (if not yet),
what would be the problem with uploading the file to Commons? All
the more, some books might have sound component. My daughter have a
whole library of that kind. She also have plenty of book with
tactile data which often make me wonder how we would integrate such
a book in Wikisource, as I'm not aware of any technology to render
that kind of data linked to the material texture. Defining a file
format to store that kind of data would be surely the easy part, all
the more when "digital texture" is a topic already extensively
covered in the literature for 3D rendering purpose.