There are still things locked for me too. I assume those will be unlocked over the next couple of weeks. But to get those interviews, you hover your mouse over the gravestone at the very beginning of the trailer and a lock will appear. Click on the lock (you have to be fast, it usually takes me a couple of re-plays to get it) and then input the code from the keypad that comes later on in the main trailer (051113). And I just realized there are two more interviews in there that I haven't transcribed yet. I'll see if I can do them too.