Hi.

since the AUX input has to be re-sampled and fed to the output mixer

Are you sure? As far as I understood, the AUX input is not actually resampled, routed through the software than fed to the output mixer, but rather is resampled and mixed/equalized etc. in DSP hardware solely. So if this is correct, than it should be possible to have AUX-In routed through the DSP during "standby" operation, and possibly even without fully booting to the player executable.

cu,
sven