I have an LG LDA-530. If the 48/96 Khz are only for the PCM, maybe I don't even need to worry about it. I just noticed this setting in the "audio"menu of the DVD player. Going from top to bottom in the "audio" menu, it is:
Dolby Digital - PCM and Bitstream
DTS - PCM and Bitstream
MPEG - PCM and Bitstream
Sample Freq - 48 and 96 kHz
DRC - OFF and ON(From what I have read about this, I want this OFF)
Vocal - OFF and ON(I think I want this off also).
Like I mentioned before, if the Sample Freq is only for PCM, then maybe it doesn't matter. I will be watching some DivX movies though that are only in 2 channel stereo. Thanks everyone.