I'm currently considering buying a DVD player with onboard Dolby Digital and DTS decoding. This allows me to pick up a decent used processor for cheap that is maybe only pro-logic compatible, but has six channel analog inputs. My question is whether or not I'm still able to utilize functions like adjusting the presence or absence of a subwoofer, selecting small or large speakers, etc, provided of course the processor normally has these functions. Has anyone tried this route before. Has anyone added an external DTS or DD processor to their existing gear. Any help would be well....helpful.