Use the following cheat codes!
It's Goin Down by Yung Joc song: at the "Press Start" screen, press B, Up, Right, Left, Y.
Make It Rain by Fat Joe song: at the "Press Start" screen, press Down, B, A, Right.
Play as Fat Joe: enable the "It's Goin Down by Yung Joc" and "Make It Rain by Fat Joe song".