Good news guys, digitalLumberjack modify the original pifba with some improvements:
1) 4 players configuration
2) Configure D-pad and analog stick at same time (I tested with my wireless xbox controller and works great)
3) Configure hotkey and exit button
4) Pass cofiguration file as argument
To install, first backup your old pifba folder and follow the guide:
https://github.com/digitalLumberjack/pifba