I was wondering if anyone could tell my why my guitar isn't playing in ableton... It's plugged in properly and it's volume knob is up. I checked for those common sense mistakes. Maybe I made one that I was unaware of though.

Anyway, when I go to my preferences it looks something like this:
Driver Type: Core Audio
Audio Input Device : Built- in Input (2 in, 0 out)
Audio Output Device : Built-in Output (0 in, 2 out)
Can someone please tell my why I am not getting any sound from my guitar????
Thank you