When used as a noun, the term monitor can refer to a video screen or audio speaker. It is also used as a verb, meaning to see or hear, as in “to monitor the video and audio.” In Premiere, you can monitor any combination of the tracks in the timeline. Only monitored tracks are included during playback and when you preview or export the program. Though you usually monitor all the tracks, at times you may want to monitor only certain tracks. You may want to hear the dialog track without the music and effects tracks, for example.
In the Timeline window, do either of the following:
Click next to the name of a video track to hide or reveal the eye icon .
Click next to the name of an audio track to hide or reveal the speaker icon .
When a monitor icon is visible, you can see or hear the clips in the corresponding track; when a monitor icon is hidden, clips in the track are excluded from playback (Figure 6.15).