This skin file allows use of Jango Fett in Multiplayer and the use of Boba and Jango in singleplayer. There are a few imperfections with the Boba skin for singleplayer, but the rest works great. Others will only be able to see you as Jango if they have this file as well. Enjoy and let me know if there are major issues with this file.
Unzip this into the Star Wars Jedi Knight Jedi Academy/GameData/Base folder and you have Jango Available.