I just downloaded Rockband Blitz. I was under the assumption that the songs from "Blitz" would be playable in "Rockband 3". After downloading, I checked my Rockband 3 song-list and none of the 25 songs from "Blitz" were there. Is there some sort of patch that I need so that the "Blitz" songs appear in my RB3 song-list? Is there something I did wrong?