Star Ocean: The Second Story Cheats

If you have an empty spot in the voice collection with a filed spot next to it, press X on the filled spot, then quickly move to the empty one. You'll hear the voice for the empty spot instead.

To get 2 easy levels you must equip a dream bracelet which will temporarily raise your level by one. While it is equipped use a forged medal. Unequip the dream bracelet and you will need 0 exp to your next level. Next get into a fight and at the end you will gain 2 levels.
Note: You can't do this trick to get past level 100. Also note that your stats will only increase as if you gained one level.

You must have a song that summons an enemy to battle, such as The Evil Melody and Enter the Hero. You have to do this while in an area where random battles can occur.

When the song is played successfully, SAVE your game while the song is still playing without returning to the field screen and load the game. Once you load it, enter an area where random battles cannot occur, such as a town. Go into the menu and exit it. You'll enter combat from the result of the song played earlier and you'll be on an unfinished Canyon battle field. Was this originally planned to be included in the game, or was it just a test field the developers used and never removed from the game?