n00b question...
Does Garageband work with the MacBook's digital optical audio input? I tried setting it in the prefs and choosing a real instrument, but get nothing via that input.
I'm thinking I've just set the thing up incorrectly but I'm not sure. Using the built-in mic works fine. Also, I know I'm getting signal via the optical audio input, because it shows up fine as active in the Sys Prefs.