Actually, now that you mention it, there are players that could be used via USB to pass through the audio, but I never thought about whether or not it was running through the player's DAC. I know the Oppos are able to do this, and I believe my Panny BD-60 does also, but only on certain formats. Does the squeezebox have a USB output or what types does it have? I can't think of another player or method that can do this, but there may be something out there that can. You could always just look for a used external DAC.