I download 96K audio files using HDTracks and other sources. Using iTunes, is it possible to output hi-resolutuion audio files (96k) via the optical audio out on my mac? There seems to be mixed opinions. If I set my sample rate in audio settings (globally) to 96K, my Denon 5700 recognizes the 96K sample rate because that is what the clock is set at. Even if I play a file in iTunes that I know is standard CD 44.1K, my Denon still recognizes the 96K signal since that's what the clock is set at. But, if I play an AIFF file at 96K, does it output that file over optical at 96K or is it down-sampled? I know iTunes down-samples to 44.1 over AirPlay but I do not know how it behaves over the direct optical out. Anyone know?