Before anybody says anything, the fileserver thing I'm setting up is completley private for me and friends only. It's so we can trade songs (from our own bands), writings, videos, pictures, and have a private chat. The server will be my Starmax (220Mhz, 144MB RAM, OS 9.1 or 8.x if it's gonna work better, which I bet it will), so I can't do anything OS X based at least for now, until I get another X-capable machine for a server.
I like Haxial's KDX, but I have to pay for that, and with my current monatary situation and long list of computer upgrades needed, shelling out $25 (I think) for some software isn't likley (my band really needs a new drumset, so just about all spending is out, really). I'll probably end up with a Hotline server, but I'd rather it not be listed for privacy and security reasons. Does anybody know of a good filesharing server software that is multiplatform, is free (client and server), and is fast and reasonably secure? I'm not expecting any attacks, but I'd rather it be private.