I know this isn't straight up editing, but I play FL with my friends at a LAN, and we figured out that after you create your character on the server, you can copy the multiplayer folder and play your MP character from another server on your own machine when you go home, then when you get back together whoever is gonna be the server can copy the players folders back onto the server and everything works fine. ( You just need to figure out who is in what folder)

However if the character was originally created on that players private server instead of on the groups one, then there seems to be no way to get that character to work on the group server.

I think it has something to do with the accounts.cfg file, but I'm not sure. Has anybody played with this yet?

I really need a spellchecker