I recently got a DVD audio disk. However, in surround mode I am not getting any Dolby Digital. My DVD Audio player shows 5.1 channels, but the Dolby Digital light never comes on. Are most DVD audio disks 5.1 sound but not Dolby Digital. And if so, what do I have to do to get the multichannel sound? I have to use prologic because DD doesnt recognize a DD signal on my receiver. Also, I got some HDCD's, but the HDCD light doesnt come on on my HDCD player (Cambridge D500SE). Are they HDCD's? If not, I am returning them to CD Now. Also, the cd's dont have HDCD anywhere on them. THanks, Any help would be nice.