hello people, sorry this is so long, skip to the last paragraph for a recap. i bought bjork's vespertine today because we got a new dvd player that can play dvd audio discs. but i'm really confused. we have a toshiba sd4800, and an onkyo tx-ds 787 receiver. on the back of the disc, it says there are three formats available. advanced resolution 5.1, advanced resolution stereo, and DD 5.1 on the top menu of this disc, there is a choice between stereo, and 5.1. i assume that stereo refers to the advanced resolution track, which i confirmed because on the receiver it says it is receiving a pcm signal sampled at 48khz (i think the toshiba downsamples it from 96khz). i also assume that the 5.1 selection is the advanced resolution 5.1 track. i can't really confirm this because the receiver still says it is only receiving a pcm signal at 48khz. i'm not sure this makes sense. well, i'm not really worried about the advanced res multichannel track, i thikn i would have to get 6 RCAs and use the analog outs on the dvd player and connect them to the multichannel input on the receiver. the thing that makes no sense is that nowhere on this disc can i find the dolby digital 5.1 track. i'm really confused. through trial and error, i figured out there are 3 groups on the disc: group 1 is the multichannel track, group 2 is the stereo track. and group 3 i have no clue. when i try to access group 3, it says i have to enter some 4-digit key, which i don't know. i'm thinking group three is the dolby digital 5.1 track. so in conclusion, there's no option on the top menu to choose the 5.1 track, and i can't get to it manually. can someone please help? i just want to hear what the 5.1 mix sounds like, and i don't have the time to go get 3 pairs of RCAs right this moment.