Hmmm... This sounds like a somewhat strange setup. You have the player in the sled, getting your audio stream from the front or rear outputs connecting to your PC. How are you feeding the player power? Through the regular power jack? I am wondering if the unusual setup is causing a ground loop somewhere, or if the player is thinking it is in AC mode and is not sending the signal the way you expect through the sled.
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Paul Grzelak
200GB with 48MB RAM, Illuminated Buttons and Digital Outputs