Sounds On/Off problem

Hello.
At start I want to say sorry for my poor english
So.. This is that script:

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class SoundsButton : MonoBehaviour {
5.     private AudioListener listener;
6.     private SpriteRenderer soundSprite;
7.     public Sprite spriteOff;
8.     public Sprite spriteOn;
9.     private int OnOff =1;
10.     // Use this for initialization
11.     void Start () {
12.         soundSprite = GetComponent<SpriteRenderer> ();
13.  
14.         OnOff = PlayerPrefs.GetInt ("soundState");
15.  
16.         listener = Camera.main.gameObject.GetComponent<AudioListener> ();
17.  
18.         if (OnOff == 0) {
19.             listener.enabled = false;
20.             soundSprite.sprite = spriteOff;
21.         } else if (OnOff == 1) {
22.             listener.enabled = true;
23.             soundSprite.sprite = spriteOn;
24.            
25.         }
26.     }
27.        
28.     void OnMouseDown()
29.     {
30.        
31.         if (OnOff == 0) {
32.             listener.enabled = false;
33.             soundSprite.sprite = spriteOff;
34.             PlayerPrefs.SetInt ("soundState", OnOff);
35.             OnOff =1;
36.  
37.         } else if (OnOff == 1) {
38.             listener.enabled = true;
39.             soundSprite.sprite = spriteOn;
40.             PlayerPrefs.SetInt ("soundState", OnOff);
41.             OnOff = 0;
42.  
43.         }
44.  
45.     }
46.  
47. }

And my problem is that it does not work on android (when I click button - sprite change working well but music is always on)
Script working well on Unity. I dont know what is going on..
No erros on console. Only "There is no audio listener on the scene" when I turn off listener.