Audio Audio Help

Hello! I'm making a 2D platformer demo, and my last big goal is to get sound into my game. I have 4 audio files for my character (Used for Running, Jumping, Landing, and Death), and 2 for coins. Would someone be able to show me how to program sound playing into my codes? Below I will put in the scripts for my Player and the Coins. I apologize if this sounds picky or whiny or anything like that, but would you be able to keep the instructions simple if possible? I have no experience with coding/programming before this project, and these codes were seen in tutorials. Thank you for your time and help!

Code (CSharp):

1. public class PlayerController : MonoBehaviour
2. {
3.     public float speed = 5f;
4.     public float jumpSpeed = 8f;
5.     private float movement = 0f;
6.     private Rigidbody2D rigidBody;
7.     public Transform groundCheckPoint;
8.     public float groundCheckRadius;
9.     public LayerMask groundLayer;
10.     private bool isTouchingGround;
11.     private Animator playerAnimation;
12.     public Vector3 respawnPoint;
13.     public LevelManager gameLevelManager;
14.  
15.     Vector2 tmpTransform;
16.  
17.     // Use this for initialization
18.     void Start()
19.     {
20.         rigidBody = GetComponent<Rigidbody2D>();
21.         playerAnimation = GetComponent<Animator>();
22.         respawnPoint = transform.position;
23.         gameLevelManager = FindObjectOfType<LevelManager>();
24.         tmpTransform = transform.localScale;
25.     }
26.  
27.     // Update is called once per frame
28.     void Update()
29.     {
30.         isTouchingGround = Physics2D.OverlapCircle(groundCheckPoint.position, groundCheckRadius, groundLayer);
31.         movement = Input.GetAxis("Horizontal");
32.         if (movement > 0f)
33.         {
34.             rigidBody.velocity = new Vector2(movement * speed, rigidBody.velocity.y);
35.             transform.localScale = tmpTransform;
36.                
37.         }
38.         else if (movement < 0f)
39.         {
40.             rigidBody.velocity = new Vector2(movement * speed, rigidBody.velocity.y);
41.             transform.localScale = new Vector2(-tmpTransform.x, tmpTransform.y);
42.         }
43.         else
44.         {
45.             rigidBody.velocity = new Vector2(0, rigidBody.velocity.y);
46.         }
47.         if (Input.GetButtonDown("Jump") && isTouchingGround)
48.         {
49.             rigidBody.velocity = new Vector2(rigidBody.velocity.x, jumpSpeed);
50.         }
51.         playerAnimation.SetFloat("Speed", Mathf.Abs(rigidBody.velocity.x));
52.         playerAnimation.SetBool("OnGround", isTouchingGround);
53.     }
54.  
55.     private void OnTriggerEnter2D(Collider2D other)
56.     {
57.         if (other.tag == "FallDetector")
58.         {
59.             gameLevelManager.Respawn();
60.         }
61.         if (other.tag == "CheckPoint")
62.         {
63.             respawnPoint = other.transform.position;
64.         }
65.     }
66.  
67.  
68. }

Code (CSharp):

1. public class CoinScript : MonoBehaviour {
2.     private LevelManager gameLevelManager;
3.     public int coinValue;
4.     private AudioSource coinSoundEffect;
5.     public AudioClip coin;
6.     public float volLowRange = 0.5f;
7.     public float volHighRange = 1.0f;
8.  
9.     // Use this for initialization
10.     void Start () {
11.         gameLevelManager = FindObjectOfType<LevelManager> ();
12.         coinSoundEffect = GetComponent<AudioSource>();
13.     }
14.    
15.     // Update is called once per frame
16.     void Update () {
17.  
18.     }
19.  
20.     void OnTriggerEnter2D(Collider2D other) {
21.         if(other.tag == "Player") {
22.             coinSoundEffect.PlayOneShot(coin, 1F);
23.             gameLevelManager.AddCoins(coinValue);
24.             Destroy(gameObject);
25.         }
26.     }
27. }