I want to record some audio from my A/V receiver. It has Toslink output, so I want to use that. I plugged a Toslink cable into that (I can see the red light!), and plugged the other end into a toslink-to-mini-toslink adapter, and plugged it into the "line in" port of my Mac.
Unfortunately, it doesn't seem to do anything. In the Sound control panel, even with the Input Volume turned all the way up, the "Input Level" shows nothing at all. In Audacity, recording just records empty silence.
I have two Macs, and the behavior here is exactly the same on both. One's an Intel Mac Mini Core Duo ("Macmini1,1"), and the other's a Macbook Core 2 Duo ("MacBook2,1"). According to the spec sheets, both have Toslink input. I frequently use Toslink output on both Macs using this cable.
I've recorded audio onto both Macs using analog audio cables and Audacity before many times. Is there anything special I need to do to enable Toslink audio input?