Model: imac 2011
OS: 10.7.2
CPU: 2.5 GHz
Memory: 2GB (2 X 1GB)
M-Audio Products: mobilePre, Microphone =(NT1-A, XLR), (Shure /XLR)
I installed protools se, and then installed pro tools 9 and all the updates I could find. I can hear sound when I add an instrumental but when I press the red...