I did read other posts about video and audio being related (I think it was actually your post

) and the only successful attempt that I had getting my audio to work has been using the VoodooHDA kext (ALC892). I am actually get frustrated to about that point of switching GPU. I was actually looking during work today

But before I was going to spend money, I wanted to troubleshoot as much as possible to make sure that I don't just throw away money due to me lack of reading ALL resources. I have been doing A LOT of reading this month trying to get my Hac running in tip-top shape.
I saw that someone (possibly you) was having problems viewing all video sources (youtube, etc). I was thinking that mine wasn't really related to the GPU because the fact that I could view other videos with ease, but it just seems to be in FCP that when it comes to a break in my clips, the Dropped Frame error occurs.
The clips that I imported to my computer were in MP4 format. I re-encoded them to MOV using MPEG Streamclip. I haven't really messed around with MP4 conversion before. I never had a need to. I always used XDCAM codecs. I am now just messing around with MP4 since I don't do video work professionally anymore. I followed other guidance from other places, but I am assuming after your post, that it may have been wrong advice to edit either MOV or MP4 in FCP?