Audio and video are out of sync when exported.

I've been trying to export a clip from a sequence in fcp. I've marked in and out points, and use the export using quicktime option. And each time, the audio is out of sync with the video.

Yea it still won't let me post images, so here are the settings:
Sequence Settings: Frame size: 1920x1080 HDTV 1080i 16:9
Pixel aspect ratio: square
field dominance: upper.
Editing timebase: 30.
Quicktime settings:
compressor: H.264.
Quality: 100%
Audio Settings:
Rate: 48kHz
Depth: 16-bit
Config: Channel Grouped
Item Properties: comicsonspot.MP$
Type: Clip
Creator: Quicktime Player
Size: 1.7 GB
Tracks: 1V, 2A
Vid Rate: 60 fps
Frame size: 1280x720
Compressor: H.263
Ok, there's a bunch more settings, let me know if you need any other info. Thanks again!

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