Step Step Revolution(SSR) Mode:
Once unlocked press Select in the
title screen or in the mode selection screen.
Remix Mode:
Once
unlocked press Select 2 times in the title screen or in the mode selection
screen.
More Music:
Keep playing the Diet mode for a few times
then exit the game and you'll find new information. Do this several times to
have even more music.
* Tip: You can play this music in nonstop and
remix mode.
SSR Mode (for new player or without saving the game):
Turn on the
power & wait until the screen say 'Dance Dance Revolution 3rd Mix' &
quickly press: Left, Left, Left, Right, Right, Right, Left, Right.
Remix Mode:
After you have accessed SSR Mode, Press: Left, Left,
Right, Right.
Thanks to Revolution readers NH and Ian!