20 Free Song Issue

[skip2nyce]

Just picked up rockband 2 for PS3. Already have it on XBOX...

I ge this message when I put the code in.. I am putting it in right also..

The redemption code you entered was invalid or has already been entered.

I redid it over 20 times and had someone else try it and it still comes out the same. Please help

[arctic_weasel]

http://register.rockband.com/ idk if this is the problem but you have to register the code on that website then theyll send u an email with the real 20 free code u have to enter in the playstation