Fight as the Boss:
Hold L1 + R2 + Circle + Start for about five seconds. Then, select single player mode and choose
any character on the game. 

Audio Tracks:
Put the game into an audio cd player, tracks 2 through 34 will play.
                             Game Shark Codes

     Enable Code (Must Be On) - 80083f2c00c8 
     Infinite Health P1 - 8008f9ec0100 
     Infinite Health P2 - 8008f9f00100