In my old plain-html site I had a folder "/free/files" with downloadable zip files. Now under Joomla I want to put the same files in folder /files. I created an item that redirects free/files to /files, and that works fine.

However, what I really need is to redirect all file requests from /free/files/a.zip to /files/a.zip - and this does not work with the redirect above. Do I have to create an item for each individual file?

(Also, placing the "ErrorDocument 404" directive in .htaccess does nothing (still getting the same 404 pages from Joomla), but that has probably nothing to do with your extension.)