I have a Denon 910 DVD player. running with definitive surrounds into a sony 5.1/dts receiver. Also a 52" Mits widescreen RPTV Hd. I was wondering if I should have LPCM OFF, I have read that PCM should be off, but in the manual it states "if you select OFF, copywrite protection will be activated and sound will be downsampled to 48Khz". I don't mind copywrite protection but is downsampling ok, or are the DVD in 48Khz anyway?