Desarrollo y creacion de videojuegos.Godot,Unity,Blender,Gimp,Game Maker,: como poner sonido en unity

En este video explico una forma de poner sonidos de pasos al caminar con unity.

y pongo el script de c# que lo hace funcionar.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class sonidoporcolision : MonoBehaviour {

        public AudioSource tickSource;

        //public float Destroy = 0.2f;
        // Use this for initialization
        void Start () {

            tickSource = GetComponent ();

        }

        void Update () {
        }

        //void OnCollisionEnter (Collision collision){
        //    if (collision.gameObject.tag == "PUYO modelo"){

        //void OnTriggerEnter(Collider other) {
            //if (other.gameObject.CompareTag ("Terron")){

            void OnTriggerEnter(Collider other) {
                if (other.gameObject.CompareTag ("Terrain")){

                tickSource.Play ();

                //Destroy (gameObject, 0.2f);

                //Destroy (gameObject, 0.2f);

            }}

    }