joykop project is a simple tool to connect joystick buttons and axes to DCOP functions.
The icons I'm using, for example, were not intended for use in joykop. The hardware part of this utility is Linux-specific.
joykop can turn your joystick into a remote control for Amarok, with the throttle control acting as an analog volume knob. Now you can crank up the volume on your computer, too. Enjoy!