Previewing Selective Audio Tracks using the JKL Keys in FCP
While using the JKL keys to preview edits that you have made, you can selectively choose which audio tracks you wish to preview while playing back your edit.
1 Go to Final Cut Pro > User Preferences > Click on the Editing Tab
2 Make sure that the "Trim with Sequence Audio" selection is checked, then check the option for "Trim with Edit Selection Audio (Mute Others)."
3 Double click on an edit point in the Timeline to activate the Trim Edit Window.
4 Place the cursor point over the side of the Trim Edit Window where you want to preview the audio, either the incoming or outgoing clip, then use the JKL keys to play it back.
In step 3 you could have also selected multiple edit points by Command Clicking more than one. In this case, to play back a specific track, all you needed to do was go to the Track Pop Up Menu and select the track you wanted to hear while using the JKL keys.
