Time for action – adding an audio track to Blender

Now, it's time for an introduction to the Video Sequence Editor, ironically, by adding an audio file. You will learn how to position the audio file on the timeline and display a representation of the waveform to help you in timing your animation in the following steps:

1. Put your cursor on the boundary between 3D View and the Timeline windows and get to the double arrowhead. Use your mouse and hold it while you move the boundary up so that the Timeline window is about three times as tall as usual.
2. With the cursor over the Timeline window, press Shift + left-arrow key to go to Frame 1.
3. Put the mouse in the lower-left corner of the Timeline window, over the diagonal lines. Press the LMB and drag the mouse up to create a new window.
4. Click on the leftmost button on the upper Timeline window header.
5. Scroll up in the Current Editor Type: menu, and select Video Sequence Editor, as shown in the following screenshot:
   
6. In the Video Sequence Editor...