AudioSource.clip

public AudioClip clip ;

Description

Выбранный по умолчанию AudioClip для проигрывания.

using UnityEngine;
using System.Collections;

[RequireComponent(typeof(AudioSource))]
public class ExampleClass : MonoBehaviour
{
    public AudioClip otherClip;

    IEnumerator Start()
    {
        AudioSource audio = GetComponent<AudioSource>();

        audio.Play();
        yield return new WaitForSeconds(audio.clip.length);
        audio.clip = otherClip;
        audio.Play();
    }
}