Listen-Modes not available while watching DVDs: I just bought a Kenwood HBT-S500 (which includes a KAF-S500). I have this System connected to my Pioneer DVD-Player DV-464-S (192KHz, 24bitDAC) via a fiber-optical-cable and to my Plasma TV (Pioneer Plasma PDP-434HDG); both of them I bought recently in Japan. When I listen to Music-CDs I can select nice Listening-Modes such as: Movie, Music , Pro Logic, Cinema, Music, Arena, Jazz-Club, Stadium, Disco, Theater... When I watch Movie-DVDs (e.g. DVD: NTSC, Dolby Digital, DTS, 5.1ch surround) I don't have all these "Listen-Modes" available. I only have 2 Listen Modes: "Stereo" and "Dolby-D" Please let me know why is that? The sound from Movies is thus very different (worse) then listing to Music-CDs. If I switch on my DVD-Player "Dolby Digital > PCM" I can select all the Listen-Modes, but the audio-quality might drop?