wondering if anyone out there has experienced a delay problem feeding the 970 video 1 optical input from an apple airtunes express. there is a 1-2 second delay at the beginning of each song. from i-tunes, i simultaneously run another system using another airtunes exp. and analog connection; no delay on that system. my guess is that it takes the 970 a moment to recognize the optical input, and i miss the first couple of seconds of each song. any fixes?