AudioSource audio = GetComponent<AudioSource>();
audio.play();
TODO
Load image of "Resources/Sprites/background.png".
GetComponent<SpriteRenderer>().sprite = Resources.Load<Sprite>("Sprites/background");
Instantiate prefab of "Resources/Prefabs/Person.prefab".
Instantiate(Resources.Load("Prefabs/Person"), Vector3.zero, Quaternion.identity);