http://tsubakit1.hateblo.jp/draft/I1WIt5lNsF_T8pxMG2D79yMfWKo

AudioCenterController.cs

using UnityEngine;
using System.Collections;

public class AudioCenterController : MonoBehaviour {

	int soundId1, soundId2;

	void Start (){
		// オーディオの登録（拡張子は.wavのみ）
		soundId1 = AudioCenter.loadSound ("Touch");
		soundId2 = AudioCenter.loadSound ("Damage");
	}

	public void PlaySound1 ()
	{
		// オーディオ1の再生
		AudioCenter.playSound (soundId1);
	}

	public void PlaySound2 ()
	{
		// オーディオ2の再生
		AudioCenter.playSound (soundId2);
	}
}