Rock Band 2 - Unlock all songs

Unlock New Venues Only:
At the Extras/Modify Game/Enter Unlock Code screen, press Circle, Circle, Circle, Circle, Triangle, Triangle, Triangle, Triangle.

Unlock Awsome Detection:
At the Extras/Modify Game/Enter Unlock Code screen, press Triangle, Square, L1, Triangle, Square, L1, Triangle, Square, L1.

Unlock Performance Mode:
At the Extras/Modify Game/Enter Unlock Code screen, press Square, Square, Circle, Circle, Triangle, Triangle, Square, Square.

Unlock Stage Mode:
At the Extras/Modify Game/Enter Unlock Code screen, press Triangle, Circle, Square, Triangle, Circle, Square, Triangle, Circle.

Unlock Select Venue Screen:
At the Extras/Modify Game/Enter Unlock Code screen, press Square, L1, L1, Square, Triangle, Square, L1, L1, Square, Triangle.