Is there any way I can enable monitoring of my Macbook's line-in port without having to open Garageband or whatever? I want to run my electric piano into the line-in, so to hear both it and a metronome widget through headphones. I don't need to record or anything.
I just want to be able to practise with a metronome without waking the wife.
I just want to be able to practise with a metronome without waking the wife.