View and modify audio tracks in Compressor
Some jobs in Compressor can contain multiple audio tracks. You can view these tracks, enable or disable them, or reconfigure them into alternative formats, if necessary, to ensure they’re correct in your transcoded output files.
Change the channel configuration of a source audio track
Select a job in the Compressor batch area.
In the Audio Properties section of the Job inspector, click the pop-up menu corresponding to the audio track you want to modify, then choose a channel configuration.
Depending on the number of channels in the audio track, different options appear in the pop-up menu. For example, a track with two channels can be configured as Stereo, Dual mono, 1.1, and so on. A track with one channel can be configured as Left, Right, Center, Left Surround, Right Surround, and so on.
Repeat step 2 as necessary for any other tracks.
Disable a source audio track
Select a job in the Compressor batch area.
In the Audio Properties section of the Job inspector, deselect the checkbox to the left of the audio track you want to disable.
The track is turned off and excluded when you transcode any files in the batch.
Tip: iTunes Store packages have specific audio requirements. You can use the methods described above to ensure that your audio is properly assigned for a successful submission to the iTunes Store.
Download this guide: PDF