The dvd menu doesn't have that option, only spoken languages.
I run the receiver on DD EX/DTS ES all the time, but the light for the SB channel wasn't lit, meaning it wasn't getting its own signal. I'll live if it happens to be DD only, but it still bugs me.
On a lighter note, there is some decent LFE in the 3rd one (Prisoner of Azkaban), especially when the maid of the Leaky Couldron gets declined for room service. And on a darker note, the third one's case does not match the first two, (which bugs me because now they don't all match, and I'm weird like that), and it doesn't have the DD EX that the other two supposedly have. They got kind of cheap on this one.
~Chuck