FTP and HTTP are completely different animals. You download from a HTTP
server via the HTTP protocol. You do not download via FTP from a HTTP
server.

BTW, I have never seen an Apache based servers where you had to change the
MIME types in order to download the files. Okay, perhaps one.com has some
kind of custom configuration, I don't know. But IMO, you are trying to
download from a completely wrong location. If you can download via FTP then
it's *NOT* located on your HTTP server.

Friedrich