FCP was meant to be rigged up with a video monitor that is being fed by your video deck or camcorder. (See pg. 55 of the FCP HD manual). Are you using a video monitor as you log? You should, I do.
In that case, the speakers should be hooked up out of the deck/camcorder, and not the Mac. So if you set your speakers up out of the deck/camcorder, you should both see the interviewee on the video monitor and hear the synch audio fed from the deck and playback from the FCP timeline. BTW, If you don’t have a video monitor, you can use a TV. My friend uses a Sony one with an S-Video connection and it looks pretty good.
Since you probably aren’t set up this way you are experiencing unreliable and unpredicatable behavior from FCP. If you are set up the above way, then most of your troubles in editing DV go away.
Now the problem lies in that you can’t hear your Mac’s audio through your speakers: no iTunes/Garageband/Soundtrack, etc. So what to do then? Just get a Y-split adapter cable from Radio Shack or get a small mixer. I use a Mackie 1202.
It is possible to work with FCP without properly monitoring video, but then you’ll need to change your Audio Video settings for Audio Out to built in.
Kevin Monahan
Author – Motion Graphics and Effects in Final Cut Pro
fcpworld.com