Hi, my guesswork is that you have the complete show in mind, and not just that trailer - right ???
As far as I know there are no official subtitles so far, and for a fan it is almost impossible to do - it's a three hours show with different speakers - a main story - a side story now and then - the different interviews and so on....
My advice would be to translate the interviews with Mack, Peter Ambacher( Mrs. Piggy), Helmut Fest( EMI) etc. because somehow it's much of the "These are the Days of our Lifes" documentary.
Yes the complete show. And you are right its the interviws mentioned that need to be translated. However i cant really hear Roger , Pheobe or any other english speaking person because of the german overdub. And as far as i can tell there are things Roger say that are not on "These are the Days of our Lifes" documentary.