Toggle Music
     At the Main Menu of Disc 1, press R1 + R2 + Start.

View Grand Theft Auto 2 Codes
     At the Main Menu of Disc 1, press L1 + L2 + R1 + R2.

View Sled Storm Codes
     At the Main Menu of Disc 1, keep pressing L1 + L2, R1 + R2.

View WCW Mayhem Codes
     At the Main Menu of Disc 2, hold L1 + L2 + X.

View NFL Gameday 2000 Codes
     At the Main Menu of Disc 2, keep pressing R1 + R2, L1 + L2.