This to has sparked my curosity...
I noticed just the other day when I put in a DTS DVD that I had my DVD player set to analog and the receiver set to optical and it still sounded great. I didn't check to see if the receiver indicated a DTS digital stream (I'll check that out tonight). It must have though, because when I tried to speak through my mic, my voice was not heard. I was hoping I found a way because I sing karaoke and always have to switch to analog. I would prefer to hear the digital recording (since it sounds much better. esp. the 5.1 digital recordings). I guess the DVD would need an analog to digital converter off the mic input to achive that. Well, I check this out tonight and get back with you then.