There is no 'AudioSource' attached Error

I am getting this error but I have audio attached to it. I have deleted the component and even rebooted. Weird issue.

So here is the error: MissingComponentException: There is no 'AudioSource' attached to the "Input-Escape-MainMenu" game object, but a script is trying to access it. You probably need to add a AudioSource to the game object "Input-Escape-MainMenu". Or your script needs to check if the component is attached before using it. InputEscape+c__Iterator6.MoveNext () (at Assets/Extras Created/InputEscape.cs:47) UnityEngine.MonoBehaviour:StartCoroutine(IEnumerator) InputEscape:Update() (at Assets/Extras Created/InputEscape.cs:40)

here is the code. It only gives the error after pressing the spacebar

 using UnityEngine;
 using System.Collections;
 ///////////////////////////////////////////////////////////////
 public class InputEscape : MonoBehaviour
 {
     ///////////////////////////////////////////////////////////////
     public GameObject mainMenuBtn;          //    quit button
     public GameObject nextBtn;                //    next button
     public GameObject overHeadBtn;          //    overhead button
 
     public GameObject effectNewBestScore;
 
     new AudioSource audio;
     public AudioClip menuSound51;
     ///////////////////////////////////////////////////////////////
     void Awake()
     {
         audio = GetComponent<AudioSource>();
 
         mainMenuBtn = GameObject.FindWithTag("MainMenuButton");        
         overHeadBtn = GameObject.FindWithTag("OverHeadButton");
         effectNewBestScore = GameObject.FindWithTag("BestScore");
 
         nextBtn = GameObject.FindWithTag("NextHoleButton");
     }
     ///////////////////////////////////////////////////////////////
     void Update ()
     {
         if (Input.GetKeyDown(KeyCode.Escape))
         {
             CanvasButtonsOnOff.fire1ButtonPressed = true;
 
             mainMenuBtn.SetActive(false);
             nextBtn.SetActive(false);
             overHeadBtn.SetActive(false);
 
             //destroy settings-1, settings-2.....courses
                 Destroy(GameObject.FindWithTag("settings-all"));
 
             StartCoroutine(WaitForMainMenu2());
         }
     }
     ////////////////////////////////////////////
     IEnumerator WaitForMainMenu2()
     {
         audio.PlayOneShot(menuSound51, 1f);
         while (audio.isPlaying == true)
         {
             yield return null;
         }
 
         effectNewBestScore.SetActive(false);
         Application.LoadLevel("MainMenu");
     }
     ////////////////////////////////////////////
 }

Now look at the pictures: