I've gotten as far as connecting to BT and the controller responds with all kinds of keys coming on the NOKIA. But as far as mapping, I'm completely clueless. Where to put the fdi file and how to map is just beyond me. It's not clear in the forum and I'm assuming that you linux guys just assume we windows people know linux. Please help me set up the keys.
Most games/emulators have key assignment menu. Go there, select the action you want to map, and press the button on the controller. This will map the action to the corresponding key. No file editing required.
"Sixaxis Support" is a metapackage with dependencies only. It pulls sixad, joydev module and X11 joystick driver. It forces a reboot after installation to enable new drivers. This reboot option prompts you to make a backup, but there are no files replaced though. It's completely safe - like normal reboot.