Playing audio

I am tring to make this audio clip play ever time that the ship.active == true; but it is only happening the first time this happens. I know it is because of the audio.PlayOneShot but I cant find a way to use two audio sources and play then both ever time the ship.active == true;

Here is the code I got:

using UnityEngine;
using System.Collections;

public class DeathRemains : MonoBehaviour {


	public GameObject shipfire1; //This is the fire that is on this ship when it is destroyed
	public GameObject shipExplode1;//The explosion for the ship
	public GameObject ship; //The ship
	
	public AudioClip fireAudio;
	public AudioClip explodeAudio;



	void Start()
	{
		
		
		if( ship.active == true) // checks if what is in ship is active
		{
			
			shipExplode1.GetComponentInChildren<ParticleSystem>().Play();
			
			PlayfireAudio();
			PlayexplodeAudio ();
		}
		
	}
	void PlayfireAudio ()
	{

		audio.PlayOneShot (fireAudio);
	}

	void PlayexplodeAudio ()
	{
		audio.PlayOneShot (explodeAudio);
	}

	
		
	

	
	void Update()
	{
		if( ship.active == true) //Checks if the ship is active
		{
			shipfire1.GetComponentInChildren<ParticleSystem>().Play(); //turns on the fire
		}
	}

}

I suggest you use AudioSource instead of AudioClip, this is more manipulative than AudioClip.
A simple example of using it in your case would be like so:

using UnityEngine;
using System.Collections;

public class DeathRemains : MonoBehaviour {

	public AudioSource fireAudio;
	public AudioSource explodeAudio;

	void Start() {
		
	}
	void Update() {
		if (ship.active) {
			fireAudio.Play();
			explodeAudio.Play();
		}
	}
}

~Make sure that you assign a clip to each audio source through the editor (and the class needs to be attached to an object, obviously).

AudioSource - Unity - Scripting API: AudioSource