How to Activate: Go to the Option Menu and go to the Sound test. Play these songs in this order: 19, 65, 09, and 17. Press start and exit. When the game starts up again, hold A and press start. Next, play the music tracks in this order: 1, 9, 9, 2, 1, 1, 2, 4. Before selecting a stage, hold A and press start. 

This code was just crazy. After a little tinkering with the music in the option menu and some button presses, you could turn Sonic into a ring, computer monitors, and other items in the game. You could also fly all over the place. It was like a bad LSD trip, with Tails running into spikes for comic relief, we guess.