I've just installed the free/trial version of Native instruments' Kontakt but am having problems routing the audio correctly. I'm on a mac pro and want to use the Line-out, but for some reason I'm unable to select anything but "Built-in", so audio (for Kontakt) comes out of the Mac Pro speaker. I want it to come out of the Line-out output. I've checked both the OSX "Audio/MIDI setup" utility as well as the "Sound" preference pane, but all seems OK there. I've tried Garageband as well as other audio applications and they all play through Line-out which is what I want. What am I doing wrong?