Apple Final Cut Express HD - Manual (Page 403)

Chapter 29 Linking and Editing Video and Audio in Sync 403
VI
To link unrelated clip items in the Timeline:
1 Arrange audio and video clip items in their respective tracks so that they line up the
way you want them to.
2 Select up to one video clip item and up to 24 audio items on different tracks in
the Timeline.
Video and audio clip
items are not linked
together.
Select video and
audio clip item that
you want to link.