If you put the game disc in a CD player, you'll be able to listen to the soundtrack and various voice tracks starting with Track 2. Go to the Options menu and enter the following code. If done ...

At the title screen, press C-Left(2), Right, A, B, C-Up, C-Right. Then, go to the options menu and highlight the ''Continues'' selection. Now press Left until the word ''Freeplay'' appears. To ...