So, I just got a Macbook Pro off craigslist (traded my xbox 360 and $35 for it). It is a 2006 or 2007 I think? Its the Core Duo model with 2gb of RAM. I love it. There is a problem with it though. I knew about it before I traded so yeah. The speakers don't work. There is no red light coming out of the headphone jack that I can see. Also when I go to system preferences/sound/output, it shows that it is connected via internal speakers, not an audio out device. PLEASE HELP!! Thank you