Install serial drivers
Install TimerOne library
Upload the Arduino code to your Arduino
On the floppy connect pins 12/11 or 14/13 together to enable the floppy disk (the green light should light up)
Connect the step pin to an even pin on the Arduino (2,4,6...)
Connect the dir pin to an odd pin on the Arduino (3,5,7...)
Import and run the NetBeans project
Load a song and enjoy the show