Having trouble playing sound on another gameobject

I am having a heck of a time trying to figure out how to play an audio file that is attached to a monster(with an audio source attached)in my game. I am able to send the damage at him but I can’t seem to be able to find the right command to send audio. Attached is the script I am working with.

Thanks very much!

var hit : RaycastHit;
var ammoCount : int = 9;
var bloodPrefab : GameObject;
var muzzlePoint : Transform;
var Damage = 2;

function Start()
{
}

function Update () {
    if(Input.GetButtonDown("Fire1")){
       ammoCount -=1;
// Not done here yet but shouldn't matter at all       
       audio.Play();
    StartCoroutine("Shoot");}
}

function Shoot() {
    var fwd = muzzlePoint.TransformDirection (Vector3.forward);
    if (Physics.Raycast (muzzlePoint.position, fwd, hit, 1000)){
       if(hit.collider.gameObject.tag == "Monster")
       {Instantiate(bloodPrefab, hit.point, hit.transform.rotation);
	    hit.collider.gameObject.SendMessage("applyDamage", Damage);
//All of this stuff works...
	    
//This is the line I'm trying to figure, just need the right syntax.
//hit.collider.gameObject.SendMessage(audio.Play());
//hit.collider.gameObject.audio.Play();
//something.something.something.argh!

	   }

}

}

function OnGUI (){ 
	GUI.Label (Rect (50, 10, 100, 20),"bullets left: " + ammoCount);
}

Try

hit.collider.gameObject.SendMessage("playSound");

Then on the monster put

var soundSample : AudioClip;

function playSound(){

	audio.volume = 0.1;

	if (!audio.isPlaying){
		audio.clip = soundSample;
		audio.Play();
	}
}