How Audio Outputs Are Assigned Automatically
Final Cut Pro automatically configures audio output busses according to the selected
linked clip items in your sequence. This feature is often used with 5.1-channel surround
sound clips, but keep in mind that Final Cut Pro supports only the following 5.1-channel
surround sound format:
 Tracks 1 and 2: Left and right
 Track 3: Center
 Track 4: Low-frequency effects (LFE)
 Tracks 5 and 6: Left surround and right surround
Based on the clip items above, the Match Audio Outputs command would create the
following audio output bus groups: stereo 1 and 2 (left and right), mono 3 (center),
mono 4 (LFE), and stereo 5 and 6 (left surround and right surround).
Choose an audio output
bus from the submenu.
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Part I
Audio Mixing
Here is how the sequence tracks would be assigned to the audio outputs:
 Tracks 1 and 2 (left and right): Stereo output 1 and 2
 Track 3 (center): Mono output 3
 Track 4 (LFE): Mono output 4
 Tracks 5 and 6 (left surround and right surround): Stereo output 5 and 6