1) I mostly removed just the big SE chunks, as there are probably too many audio changes to remove them all seamlessly. You might notice that Han's "Das kann ich mir vorstellen" is still the SE take. You have to listen to it yourself to judge how well you feel it worked ;)

2) Honestly, I don't know. I'm really not a pro at audio editing, and while I am able to edit pretty seamlessly, I'm not really fit at stuff like surround matrices. Technically all the tracks were just ripped the way they were (from the GOUT-DVD and both the THX and SilverScreen LDs), so I guess any surround information within those tracks is still present.