Watching the DRUMLINE DVD, I was going to the end of the credits to see who they give special thanks to and at the very end I happen to see "DTS" right next to the DD symbol. Well I checked "as I do with all my DVD's" before I began playing it and it only gave DD 5.1. After I saw this in the credits I checked again and I even checked in the special features. No DTS feature. Is this something thats normal? Why would they have it in the end credits if its not in the DVD? I'm just confued I guess.