Redbox rentals: BD movies w/DD5.1 audio?

[benji888578]

(not sure where to post this, and, yes I searched and didn't find)

So, the last couple (or so) movies, some being blockbuster movies, I rented from Redbox have had only DD5.1 soundtracks!?! Anyone know what the heck is going on? I understand only putting the movie and a few previews on there without the special features, since it's a 24 hour rental, but, why the dumbing down of audio?

(I still rent movies, sometimes before I can buy the movie, sometimes to find out if a movie is worth buying, sometimes if I missed it in the theater.)