Hi -- I'm working on my own database of DVDs and I'm trying to define acceptable values for the Sound Format field. so far, I have the following: DD 5.1 DD 5.0 DD 2.0 Mono DTS My questions are these: 1. Are there multiple kinds of DTS or is it just plain DTS? 2. I have discs that simply state "Dobly Surround" (like Blue Velvet). Is that the same as saying DD 2.0? 3. Any other formats that I obviously missed? Thanks.