Emon was working on one, but I think he hit some hurdles that he couldn't overcome.
At my "real" work, I was tasked with writing a WebDAV server layer for Apache and mod_perl. The company is going to open-source it, so at that point, we'll have a viable, reliable way for you guys to transfer files to massassi. You can use any WebDAV client (like WebDrive on Windows, Konqueror on Linux, Transmit or the Finder on OSX) or even Internet Explorer to transfer the files. I have no idea when it will be done though.
The thing is, it's not a high priority because we only get 1 or 2 files a month, max.