Apple Soundtrack Pro 2 - Manual (Page 120)

120 Chapter 4 Working with Multitrack Projects
To lock a track, do one of the following:
m Select the track, then choose Multitrack > Lock Selected Track.
m Control-click the track, then choose Lock Selected Track from the shortcut menu.
To unlock a track, do one of the following:
m Select the track, then choose Multitrack > Unlock Selected Track.
m Control-click the track, then choose Unlock Clip from the shortcut menu.
Making Clip Channel Selections
A production sound recording often results in a stereo file or a multichannel file that
contains distinct data on different channels (for example, a lapel microphone on one
channel and a boom microphone on another channel). In such cases, you may want to
adjust a stereo clip so that it represents just one of its two channels in the Timeline. You
can also adjust a multichannel clip to represent just one of its channels, an adjacent
pair of its channels, or six channels. Soundtrack Pro provides two different ways to
make these channel selections in a clip.
Using the Shortcut Menu to Make a Channel Selection
Once a clip is in the Timeline, you can select (solo) an individual channel of a stereo file.
Or you can select an individual channel or various pairs of channels of a multichannel
file. The clip retains this channel selection throughout the life of the multitrack project. If
you duplicate the clip, the copy also inherits the same channel selection. Changing any
one instance of a clip does not affect any other instance. For stereo files, there are two
options: channel 1 and channel 2. For six-channel files, there are nine different options.
Note: You can change the channel selection at any time by repeating the following steps.
Choose Lock Selected Track
from the shortcut menu.