1) Select the clip in FCPX and bring up the inspector (command-4). Click on the audio tab. Under channel configuration, make sure an audio channel is selected.
2) If that doesn't reveal the problem, verify the clip is good and the codec isn't something unusual. Do this by right clicking the clip and selecting reveal in finder. Open the file in quicktime. Play it back and make sure there's sound. If there is sound, go to the menu and choose Window-->View inspector. What does it say under format?
OutOfFocus.TV - Original series, music videos, and entertainment for your couch.
I'm having the same problem as described above. I'm trying to import H264 .MOVs (shot on a 5D), and once the clips are imported and transcoded in FCPX, there is no audio attached to the clips at all. No audio tab to click on in the Inspector.
I have a feeling this may have something to do with my checking "Remove silent audio channels" upon import, even though I've confirmed that there is indeed quality audio "baked in" to the original H264 files.
Is there a way to re-import just the audio to the video files if FCPX "removed" them upon import? Thanks!