drfsupercenter said:

So what is the "digital audio output" on the V8000? I saw a picture of the back of it in eBay...

LD-V8000 doesn't have any digital outputs -- neither AC3 nor PCM nor S/PDIF -- only two sets of analog outputs.
It does contain a DAC circuit to decode PCM digital sound into analog and sends it out through those jacks labelled "digital".
They're analog signals coming out that set of jacks, but they're playing the soundtrack stored digitally on the disc.
The sound stored analog on the disc plays through the other set of jacks.