Click the magnifying glass to zoom in or out of the waveform
The waveform is a visual representation of the audio in a track. The height of the wave represents the volume of the playback.
Zoom in and out of the waveform from Level 10 to Level 0. Level 10 will show you the most detailed audio and create the widest waveform to accommodate that detail. Level 0 is zoomed out and will give you the most compact representation of the track's audio.