Adding Audio Tracks
If you've imported music or audio files, you can add them to your movie as background music or sounds.If you have a microphone connected to your PC, you can add audio narration to video clips. Your narration is synchronized with the video automatically, so the narration describes the action in your movie as it plays.To add audio:
1. Choose View > Timeline.2. In the Collections pane, click the collection that contains the audio clip that you want to add to your project.3. Drag the clip from the Contents pane to the timeline's Audio/Music track (Figure 11.15 ).
Figure 11.15. You can drag an audio clip left or right to adjust its position in the movie or drag the clip's left or right edge to trim its length. (The Audio trackabove the Audio/Music trackholds the
video's audio track.) You can add video clips to the Audio/Music track if you want the audio, but not the video, to play in your movie.
To narrate the timeline:
1. Choose View > Timeline.2. Move the timeline's playback indicator (the square with a vertical line; refer to Figure 11.15) to an empty point on the Audio/Music track where you want to begin your audio narration.3. Choose Tools > Narrate Timeline (Figure 11.16 ).
Figure 11.16. Click Show More Options to set additional recording options. If the Limit Narration box is unchecked, you can keep talking past the end of the movie.

Tips

Figure 11.17. Sound Recorder is a freeand underratedWindows program. You can record, mix, play, and edit sounds with it; choose Help Topics from its Help menu for instructions.
