Hello- I have noticed that while my new Star Wars original trilogy dvd's play the DD 5.1 "EX" on my Denon 2200/Yammie 2400, the prequal discs (Episodes I and II, do not play the "EX" despite saying the same thing as the new original trilogy discs. Do I have faulty prequal discs? I did buy both of them on their first day of release. Has anyone else heard of these discs not playing the "EX" information? Thanks!!