Capcom Fighting Evolution Cheats

Original music
Successfully complete the game and unlock everything (all characters and theme songs). Then, hold [X] during the matches to hear the theme song of your opponent. However if you die, you must do it again after the enemy's speech; hold [X] and select your characters. Note: This will give away who you are going to fight in the next round because of the pause of the music.

Play as Pyron
Defeat Pyron in arcade mode to unlock him and his stage.

Play as Shin Akuma
Defeat Shin Akuma in arcade mode to unlock him and his stage.

Select victory pose
Press [Kick] or [Punch] button after winning a round to change your victory pose.

Switch starting characters
Between matches, hold two [Kick] buttons. When the match begins, you can start the round with your second selected character instead of your first.

Character references
Maynmar: Sagat, Adon, Dalhsim.
Japan: E. Honda, Ibuki, Makoto, Dan, Maki, and a picture of Cammy on the billboard.
Hong Kong: Yang is sitting down and Fei Long can be seen standing by the boat.
Jungle: Oro (in the sleeping bag), Blanka jumps in the lake.
New York: You can see Ken, Charlie, T. Hawk, Cody, D.J, Hugo, Cammy, Sean, Birdie and a picture of Soddom.
Underworld: You can see B.B. Hood behind a coffin; she keeps peeking out.