Adding visualizations to the four playing loops

It's great fun to watch the visualization of the loop sounds as they play together. To add visualizations to the four AudioSources, perform the following steps:

1. Import the SpectrumCubes.cs C# script file from the previous recipe into this project.
2. Select the Main Camera in the Hierarchy panel. Then, in the Inspector panel, set the Transform Position to (224, 50, -200).
3. With the Main Camera still selected, set the Camera in the Inspector panel to have the following settings: Projection = Perspective, Field of View 60, and Clipping Planes 0.3 - 300.
4. Add a DirectionalLight GameObject to the scene.
5. For each of the four GameObjects containing your AudioSources, add an instance of the SpectrumCubes script class.
6. In the Inspector panel for the Spectrum Cubes (Script) component, change the displayColors variable for each AudioSource GameObject.
7. Set the startY values of the Spectrum...