Audio, play when laser hits object

I have an audio source and a sound attached to a laser prefab which acts like a bullet. I want an audio clip to be played when the laser hits an object with the tag "Block". Here is my script:

 var mySound : AudioClip;
 
 function Start () {
 
 }
 
 function Update () {    
     //move laser forward
     transform.position += transform.forward * laserSpeed * Time.deltaTime;    
     DestroyObject();
 }
 //destroy object after 5 seconds
 function DestroyObject(){
     yield WaitForSeconds (5);
     Destroy (gameObject);
 }
 
 function OnTriggerEnter (other : Collider) {
     if(other.tag == "Block"){
         audio.PlayOneShot(mySound);
         Destroy(other.gameObject);
         
     }
     Destroy(gameObject);
 }

If I have the "audio.PlayOneShot(mySound);" in the update function the sound fires, so I must have everything setup correctly in the inspector, I cannot figure out why it will not fire from here.