extracting audio only from iMovie?

Here's a way you can extract a portion of the audio in a video clip and make an aiff sound file. It sounds a little complicated, but really isn't when you do it. Others may have simpler ways, but this is how I do it, FWIW.

First, in your video clip split or trim it to isloate the portion containing the audio that you want to extract. Then, extract the audio from the trimmed video clip or from the video segment that you split off.

The audio clip that you have extracted will contain only the audio from the portion of the video that you trimmed or split off.

Export that audio clip as follows:

1. File>Export
2. Click the Quicktime icon at the top of the pop up panel.
3. In the "compress movie for" drop down menu, choose "Expert Settings".
4. Click "Share"
5. In the "save exported file as . . " drop down menu, select "Sound to AIFF"
6. Click the Options button
7. Select the following settings:
Format -- Linear PCM
Channels --Stereo (LR) rate -- 48,000 KZ
Sample size -- 16 bits
8. Leave the other boxes unchecked.
9. Click O.K.
10. Give it a name and location (I use Desktop)
11. Click Save

Your extracted audio file will now be saved to your desktop as an .aiff file, to put in iTunes or use as you wish.