Apple Final Cut Pro 6 - Manual (Page 608)

Chapter 16 Working with Multiclips 275
II
 In a sequence multiclip, you can change each audio item independently. For example,
if you have a sequence multiclip with four audio items open in the Viewer, you can
independently cut to a new angle for audio item 4 without changing the angles for
audio items 1–3.
However, independently switching video or audio angles breaks linking relationships
between a multiclip’s clip items in the Timeline. After you perform the switch, only
the audio item whose angle you switched remains linked to the video item.
To choose whether you switch or cut video, audio, or both at the same time:
m Choose View > Multiclip Active Tracks, then select one of the following options:
 Video + Audio: Both video and audio change at the same time.
 Video: Only video changes.
 Audio: The specified audio items change:
 All: All audio items change at once.
 A1+A2: Audio items 1 and 2 change simultaneously.
 A3+A4: Audio items 3 and 4 change simultaneously.
 A1: Only audio item 1 changes.
 A2: Only audio item 2 changes.
 A
N
: Only audio item N changes.
Note: The same menu items are available in the Playhead Sync pop-up menu in
the Viewer.
...only audio item 4 is
changed, and remains
linked to the video item.
After you switch the
active angle for
audio item 4...
These audio items are
no longer linked to the
video clip item.