Re: Auto upload a file when editing
I can think of a way... And it involves coding ;)
Basically, I would suggest you hack the images system for editing a wiki page and add a modded version which allows files of all types to be uploaded in the exact same way as images - except that files should be uploaded to the attachents path, so that they can be removed again as an attachment. Then just drop in a link in the same way that adding images adds a tag.
I guess what you'd need, as well as a modded image upload system, would ba a wiki tag which links to the attached file, really.
How do you feel about coding that?