Apple iMovie HD - Manual (Page 29)

Chapter 3 Creating Your First Movie 29
You can also display your movie in a slightly different way by clicking the timeline
viewer button. The timeline viewer appears and displays your video and any audio
clips.
You can select and edit clips in the timeline viewer, and arrange and adjust the audio
clips to go with your movie, too. Your video clips appear in the top track, and audio
clips appear in the two audio tracks below.
To add audio clips to your movie, click the Audio button and the Audio pane appears.
You use this pane to add sound effects, record a voiceover, or import music from a CD
or your iTunes music library or GarageBand music. Choose the type of audio you want
to use from the pop-up menu at the top of the Audio pane.
Timeline viewer button Audio button
Video track
Audio tracks
Drag a song or sound
effect into your movie.