Cant get Footsteps to play

Audio & Video
1

hi I am trying to get a footstep sound playing when the character is moving but having no luck can anyone help, thanks:)

using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour
{
    public float moveSpeed = 3.0f;
    public float rotateSpeed = 3.0f;
    Vector3 moveDirection;

    public AudioClip audioClip;
    private AudioSource audioSource;

    private CharacterController controller;

    void Start()
    {
        controller = GetComponent<CharacterController>();
        audioSource = GetComponent<AudioSource>();
    }
    void Update()
    {
        //Feed moveDirection with input.
        moveDirection = new Vector3(0, 0, Input.GetAxis("Vertical"));
        //apply rotation, should be able to do this in the moveDirection var but it's not working?...
        transform.Rotate(new Vector3(0, Input.GetAxis("Horizontal") * rotateSpeed * Time.deltaTime, 0));
        //Multiply it by speed.
        moveDirection *= moveSpeed;
        //Jumping
        moveDirection = transform.TransformDirection(moveDirection);

        //Making the character move
        controller.Move(moveDirection * Time.deltaTime);

        ///////TRYING TO PLAY A FOOTSTEP SOUND HERE!!

        if (controller.Move == true) 
        {
            GetComponent<AudioSource>().Play();
        }
    }

    void OnControllerColliderHit(ControllerColliderHit hit)
    {
        if (hit.gameObject.name.Contains ("Wall")) {
            audioSource.PlayOneShot (audioClip, 1f);
        }

    }

    void OnTriggerEnter(Collider hit)
    {
        //Debug.Log("In room");
    }

    void OnTriggerExit(Collider hit)
    {
        //Debug.Log("Leaving room");
    }



}
2

Try assigning the audioClip variable to audioSource.clip in the start function.