I've recently tried to switch my Mini from analog output to digital using a mini-optical to toslink cable, but I'm not getting any sound through the amplifier. When I plug the cable I can see the output changing from Internal/Headphones to Digital Output, so I know the cable is connected/seated properly. I've also checked Audio MIDI setup and it's set to 48k for Digital Output. This is on a 1.83ghz Core Duo, which I've checked is capable of outputting digital. I also know the optical works fine on my receiver (Pioneer VSX-D912) as I have one other optical component and two coaxial digital components working fine. I'm a bit concerned as I would have expected light to shine from the output jack on the Mini when the mini-optical adapter is inserted (without the toslink plugged into the adapter), but no light is visible. Can anyone confirm if you're able to see light from the jack on your Mini? Or is there anything else you can suggest short of taking it in to Apple? (Incidentally I don't believe it's under warrany - obtained from eBay about a year ago). Thanks, Tom Forgot to mention, it's running Leopard 10.5.2.