did a minor tweak

Assets/Scripts/AudioManager.cs

@@ -0,0 +1,62 @@
+using System.Collections;
+using System.Collections.Generic;
+using System;
+using UnityEngine;
+using UnityEngine.Audio;
+
+public class AudioManager : MonoBehaviour
+{
+
+    public AudioMixer theMixer;
+    public Sound[] sounds;
+    public AudioMixerGroup SFX;
+    public AudioMixerGroup Music;
+    public AudioMixerGroup Master;
+    //public AudioSource.AudioMixerGroup outputAudioMixerGroup;
+
+
+    void Awake()
+    {
+        foreach (Sound s in sounds)
+        {
+            s.source = gameObject.AddComponent<AudioSource>();
+            s.source.clip = s.clip;
+            s.source.volume = s.volume;
+            s.source.pitch = s.pitch;
+            if (s.output == "SFX")
+            {
+                s.source.outputAudioMixerGroup = SFX;
+            }
+            if (s.output == "Music")
+            {
+                s.source.outputAudioMixerGroup = Music;
+            }
+            if (s.output == "Master")
+            {
+                s.source.outputAudioMixerGroup = Master;
+            }
+            //s.source.outputAudioMixerGroup = s.output;
+        }
+    }
+    void Start()
+    {
+        if (PlayerPrefs.HasKey("MasterVol"))
+        {
+            theMixer.SetFloat("MasterVol", PlayerPrefs.GetFloat("MasterVol"));
+        }
+        if (PlayerPrefs.HasKey("MusicVol"))
+        {
+            theMixer.SetFloat("MusicVol", PlayerPrefs.GetFloat("MusicVol"));
+        }
+        if (PlayerPrefs.HasKey("SFXVol"))
+        {
+            theMixer.SetFloat("SFXVol", PlayerPrefs.GetFloat("SFXVol"));
+        }
+    }
+
+    public void Play(string name)
+    {
+        Sound s = Array.Find(sounds, sounds => sounds.name == name);
+        s.source.Play();
+    }
+}