SoundOnScriptReload.cs

using System;
using UnityEngine;
using System.Collections;
using System.Reflection;
using UnityEditor;

[ExecuteInEditMode]
public class SoundOnScriptReload : MonoBehaviour
{
    [UnityEditor.Callbacks.DidReloadScripts]
    private static void OnScriptsReloaded()
    {
        var audioClip = (AudioClip)EditorGUIUtility.Load("Assets/Sounds/" + "ScriptsDone" + ".ogg");
        PlayClip(audioClip);
    }

    public static void PlayClip(AudioClip clip)
    {
        Assembly unityEditorAssembly = typeof(AudioImporter).Assembly;
        Type audioUtilClass = unityEditorAssembly.GetType("UnityEditor.AudioUtil");
        MethodInfo method = audioUtilClass.GetMethod(
            "PlayClip",
            BindingFlags.Static | BindingFlags.Public,
            null,
            new System.Type[] {
                typeof(AudioClip)
            },
            null
        );
        method.Invoke(
            null,
            new object[] {
                clip
            }
        );
    }
    public static void StopAllClips()
    {
        Assembly unityEditorAssembly = typeof(AudioImporter).Assembly;
        Type audioUtilClass = unityEditorAssembly.GetType("UnityEditor.AudioUtil");
        MethodInfo method = audioUtilClass.GetMethod(
            "StopAllClips",
            BindingFlags.Static | BindingFlags.Public,
            null,
            new System.Type[] { },
            null
        );
        method.Invoke(
            null,
            new object[] { }
        );
    }
}