Bust-A-Move 4 cheats and cheat codes for Playstation

Go to the title (Push Start Button) screen and press the following button 
combination:
Unlock tarot reading in options menu: Press Up, Triangle, Down, Triangle, Up.

Unlock bonus characters: Press Right, Right, Triangle, Left, Left.

Unlock more puzzles in arcade mode: 
For NTSC version, press Triangle, Left, Right, Left, Triangle.
For PAL version, press Square, Circle, X, Square, Circle at the title screen. 

If the codes are accepted, you should hear a sound.

Unlock Talk demo options at the options screen:
Activate Bonus characters and Tarot reading codes. After press the 
following button combination att the title (Push start button) screen:
Square, Up, Left, Down, Right, Up, Square, Down, Left, Up, Right,
Down, Square.
If the code is accepted, you should hear a sound.

Unlock Tarot reading in options: 
Finish the story mode once.