optical digital audio input does not work

Hi all,

I am trying to record some of my old DCC cassettes onto my imac, however, for some reason the optical digital input does not work.

I have searched everywhere, tried all settings in audio/midi setup.

I did notice that when I connect the digital cable to the output, the build in audio automatically recognizes it, and switches to 'digital output'.

Analog input does work fine. I am running a 3.06 GHz intel core 2 duo with mac os 10.6.8. Digital cables are fine too (can play on my receiver).

Thanks for your help,

Wouter