2016福島ゲームジャム FootSteps ( https://www.youtube.com/watch?v=eYanv0k8pwU )でのSoundManager。ADX2LEでセレクタラベルで音楽切り替え。マルチシーン対応( https://qiita.com/tatmos/items/b0dffe4075aa5af3efd5 )

SoundManager.cs

using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;

public class SoundManager  : SingletonMonoBehaviourFast<SoundManager>{

    CriAtomSource source;
	// Use this for initialization
	void Start () {
        StartCoroutine("PlayBGM");

        SceneManager.sceneLoaded += OnSceneLoaded;
	}

    void OnStart() {
    }


    //void OnLevelWasLoaded(int level) {
    void OnSceneLoaded(Scene scene, LoadSceneMode loadSceneMode) {
        
        //Debug.Log("OnLevelWasLoaded " + level);
        StartCoroutine("PlayBGM");
    }
	
    /// <summary>
    /// シーンに合わせてBGMを変更する
    /// </summary>
    /// <returns>The background.</returns>
    IEnumerator PlayBGM()
    {
        yield return new WaitForSeconds(1.0f);  
        if (SoundManager.instance.source == null)
        {
            SoundManager.instance.source = this.gameObject.AddComponent<CriAtomSource>();
        }

        if(SceneManager.GetSceneByName("Title").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Title");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }

        else if(SceneManager.GetSceneByName("CharaAndStageSelect").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Game");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }
        else if(SceneManager.GetSceneByName("Stage1").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Stage1");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }
        else if(SceneManager.GetSceneByName("Stage2").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Stage2");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }
        else if(SceneManager.GetSceneByName("Stage3").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Stage3");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }
        else if(SceneManager.GetSceneByName("Stage4").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Stage4");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }
        else if(SceneManager.GetSceneByName("Stage5").isLoaded)
        {
            SoundManager.instance.source.player.SetSelectorLabel("BGM","Stage5");
            SoundManager.instance.source.player.UpdateAll();
            SoundManager.instance.source.Play("BGM");
        }

    }

    /// <summary>
    /// SEを鳴らす
    /// </summary>
    /// <param name="name">Name.</param>
    public void PlaySE(string name)
    {
        SoundManager.instance.source.Play(name);
    }

    /// <summary>
    /// 足音　単発　足跡が着くときの音
    /// </summary>
    public void PlayFootStep()
    {
        SoundManager.instance.source.Play("footStep");
    }

    /// <summary>
    /// 足をすべらせて落ちる音
    /// </summary>
    public void PlayFall()
    {
        SoundManager.instance.source.Play("fall");
    }

    /// <summary>
    /// 時間切れの音
    /// </summary>
    public void PlayTimeOut()
    {
        SoundManager.instance.source.Play("TimeOut");
    }

    /// <summary>
    /// ゴールにたどり着いた音
    /// </summary>
    public void PlayGaol()
    {
        SoundManager.instance.source.Play("footSteps");
    }

    /// <summary>
    /// ワープした時の音
    /// </summary>
    public void PlayWarp()
    {
        SoundManager.instance.source.Play("Warp");
    }

}