Apple Final Cut Express HD - Manual (Page 450)

450 Part VI Rough Editing
1 Disable linked selection by doing one of the following:
 Click the Linked Selection button (or press Shift-L) so that it’s off.
For more information, see “ Linking Video and Audio Clip Items ” on page 402.
 Click the edit point between the two audio items while holding down the Option
key.
2 Select the Roll tool from the Tool palette (or press the R key).
3 Drag the audio edit point to the right so that the entire word plays at the end of the
first clip.
Now when you play through this cut, you can hear all of the words the first person is
saying, and then the second person’s reply.