This code is entered while a match is taking place in any arena: Push L1 and L2 at the same time. Allows the player to select which song is played during the match. Hit the same buttons again to cycle through the different songs.

Unlock Everything
Enter the following code at the main menu screen: Hold down L1 and press X, square, triangle, O, X, square, triangle, O.

Unlocking Cheat Screen
At the main title screen, hold L1 and enter the following: X, Triangle, X, Triangle, Circle