diff --git a/img/0.gif b/assets/0.gif
similarity index 100%
rename from img/0.gif
rename to assets/0.gif
diff --git a/img/1.gif b/assets/1.gif
similarity index 100%
rename from img/1.gif
rename to assets/1.gif
diff --git a/img/2.gif b/assets/2.gif
similarity index 100%
rename from img/2.gif
rename to assets/2.gif
diff --git a/img/3.gif b/assets/3.gif
similarity index 100%
rename from img/3.gif
rename to assets/3.gif
diff --git a/img/4.gif b/assets/4.gif
similarity index 100%
rename from img/4.gif
rename to assets/4.gif
diff --git a/img/5.gif b/assets/5.gif
similarity index 100%
rename from img/5.gif
rename to assets/5.gif
diff --git a/img/6.gif b/assets/6.gif
similarity index 100%
rename from img/6.gif
rename to assets/6.gif
diff --git a/img/7.gif b/assets/7.gif
similarity index 100%
rename from img/7.gif
rename to assets/7.gif
diff --git a/img/8.gif b/assets/8.gif
similarity index 100%
rename from img/8.gif
rename to assets/8.gif
diff --git a/img/9.gif b/assets/9.gif
similarity index 100%
rename from img/9.gif
rename to assets/9.gif
diff --git a/img/a.gif b/assets/a.gif
similarity index 100%
rename from img/a.gif
rename to assets/a.gif
diff --git a/img/b.gif b/assets/b.gif
similarity index 100%
rename from img/b.gif
rename to assets/b.gif
diff --git a/assets/click.wav b/assets/click.wav
new file mode 100644
index 0000000..91aab73
Binary files /dev/null and b/assets/click.wav differ
diff --git a/assets/done.wav b/assets/done.wav
new file mode 100644
index 0000000..31d38c2
Binary files /dev/null and b/assets/done.wav differ
diff --git a/img/next.gif b/assets/next.gif
similarity index 100%
rename from img/next.gif
rename to assets/next.gif
diff --git a/img/retry.gif b/assets/retry.gif
similarity index 100%
rename from img/retry.gif
rename to assets/retry.gif
diff --git a/assets/retry.wav b/assets/retry.wav
new file mode 100644
index 0000000..28fd57f
Binary files /dev/null and b/assets/retry.wav differ
diff --git a/img/slash.gif b/assets/slash.gif
similarity index 100%
rename from img/slash.gif
rename to assets/slash.gif
diff --git a/img/sound0.gif b/assets/sound0.gif
similarity index 100%
rename from img/sound0.gif
rename to assets/sound0.gif
diff --git a/img/sound1.gif b/assets/sound1.gif
similarity index 100%
rename from img/sound1.gif
rename to assets/sound1.gif
diff --git a/img/star0.gif b/assets/star0.gif
similarity index 100%
rename from img/star0.gif
rename to assets/star0.gif
diff --git a/img/star1.gif b/assets/star1.gif
similarity index 100%
rename from img/star1.gif
rename to assets/star1.gif
diff --git a/img/star2.gif b/assets/star2.gif
similarity index 100%
rename from img/star2.gif
rename to assets/star2.gif
diff --git a/img/title.gif b/assets/title.gif
similarity index 100%
rename from img/title.gif
rename to assets/title.gif
diff --git a/src/Bitmaps.c b/src/Bitmaps.c
index 68b099e..296cb37 100644
--- a/src/Bitmaps.c
+++ b/src/Bitmaps.c
@@ -11,6 +11,8 @@
 #define StarPictBaseResID    (SlashCharPictResID + 1)
 #define NextButtonPictResID  (StarPictBaseResID + StarPictCount)
 #define RetryButtonPictResID (NextButtonPictResID + 1)
+#define SoundOffPictResID    (RetryButtonPictResID + 1)
+#define SoundOnPictResID     (SoundOffPictResID + 1)
 
 #define StarRectPadding 2
 
@@ -66,7 +68,7 @@ void Bitmaps_Init(Bitmaps *pBitmaps)
         }
     }
     
-    // Load next button
+    // Load slash char
     pBitmaps->SlashCharPict = GetPicture(SlashCharPictResID);
     if (pBitmaps->SlashCharPict == nil)
     {
@@ -86,6 +88,20 @@ void Bitmaps_Init(Bitmaps *pBitmaps)
     {
         ShowError("\pRetry button PICT resource missing!", true);
     }
+    
+    // Load sound off
+    pBitmaps->SoundOffPict = GetPicture(SoundOffPictResID);
+    if (pBitmaps->SoundOffPict == nil)
+    {
+        ShowError("\pSound off PICT resource missing!", true);
+    }
+    
+    // Load sound on
+    pBitmaps->SoundOnPict = GetPicture(SoundOnPictResID);
+    if (pBitmaps->SoundOnPict == nil)
+    {
+        ShowError("\pSound on PICT resource missing!", true);
+    }
 }
 
 void Bitmaps_GetNumberRect(const Bitmaps *pBitmaps, const uint32_t number, const uint8_t scale, Rect *pDestRect)
@@ -216,6 +232,35 @@ void Bitmaps_DrawHalfStars(const Bitmaps *pBitmaps, const uint8_t halfStars, con
     for (; drawn < maxStars; drawn++)
     {
         DrawScaledPic(pBitmaps->StarPicts[0], scale);
+        GetPen(&penPosition);
         MoveTo(penPosition.h + (StarRectPadding * scale), penPosition.v);
     }
 }
+
+void Bitmaps_GetSoundRect(const Bitmaps *pBitmaps, const bool enabled, const uint8_t scale, Rect *pDestRect)
+{
+    Rect r;
+    
+    GetScaledPicFrame(pBitmaps->SoundOffPict, scale, pDestRect);
+    GetScaledPicFrame(pBitmaps->SoundOnPict, scale, &r);
+    ConcatenateRect(pDestRect, &r, pDestRect);
+}
+
+void Bitmaps_DrawSound(const Bitmaps *pBitmaps, const bool enabled, const uint8_t scale)
+{
+    Point penPosition;
+    Rect r;
+    
+    DrawScaledPic(pBitmaps->SoundOffPict, scale);
+    if (enabled)
+    {
+        DrawScaledPic(pBitmaps->SoundOnPict, scale);
+    }
+    else
+    {
+        GetScaledPicFrame(pBitmaps->SoundOnPict, scale, &r);
+        GetPen(&penPosition);
+        OffsetRect(&r, penPosition.h, penPosition.v);
+        FillRect(&r, black);
+    }
+}
diff --git a/src/Bitmaps.h b/src/Bitmaps.h
index 408a27f..5431773 100644
--- a/src/Bitmaps.h
+++ b/src/Bitmaps.h
@@ -35,4 +35,7 @@ void Bitmaps_DrawSlashChar(const Bitmaps *pBitmaps, const uint8_t scale);
 void Bitmaps_GetHalfStarsRect(const Bitmaps *pBitmaps, const uint8_t halfStars, const uint8_t maxStars, const uint8_t scale, Rect *pDestRect);
 void Bitmaps_DrawHalfStars(const Bitmaps *pBitmaps, const uint8_t halfStars, const uint8_t maxStars, const uint8_t scale);
 
+void Bitmaps_GetSoundRect(const Bitmaps *pBitmaps, const bool enabled, const uint8_t scale, Rect *pDestRect);
+void Bitmaps_DrawSound(const Bitmaps *pBitmaps, const bool enabled, const uint8_t scale);
+
 #endif
diff --git a/src/GameEndScene.c b/src/GameEndScene.c
index 02ca7d6..2252648 100644
--- a/src/GameEndScene.c
+++ b/src/GameEndScene.c
@@ -32,6 +32,9 @@ void GameEndScene_Init(GameWindow *pGameWindow)
     GetBoxRect(pContentRect, Bottom, &r);
     GetBoxRect(&r, Top, &r);
     CenterRect(&r, &(pGameWindow->GameEndScene.ScoreRect));
+    
+    // Play done sound
+    Sounds_PlayDoneSnd(&(pGameWindow->Sounds));
 }
 
 void GameEndScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
diff --git a/src/GameWindow.c b/src/GameWindow.c
index 235306f..6a86a8d 100644
--- a/src/GameWindow.c
+++ b/src/GameWindow.c
@@ -24,6 +24,9 @@ void GameWindow_Init(GameWindow *pGameWindow)
     // Load PICT resources
     Bitmaps_Init(&(pGameWindow->Bitmaps));
     
+    // Load snd resources
+    Sounds_Init(&(pGameWindow->Sounds));
+    
     GameWindow_SetScene(pGameWindow, Title);
 }
 
diff --git a/src/GameWindow.h b/src/GameWindow.h
index 44c0286..367e8c2 100644
--- a/src/GameWindow.h
+++ b/src/GameWindow.h
@@ -7,6 +7,7 @@
 #include "MacCommon.h"
 #include "GameEngine.h"
 #include "Bitmaps.h"
+#include "Sounds.h"
 #include "Scenes.h"
 
 #define WindowPattern  black
@@ -16,6 +17,7 @@ typedef struct sGameWindow
     WindowPtr     Window;
     GameEngine    Engine;
     Bitmaps       Bitmaps;
+    Sounds        Sounds;
     SceneId       CurrentSceneId;
     TitleScene    TitleScene;
     PlayScene     PlayScene;
diff --git a/src/LevelEndScene.c b/src/LevelEndScene.c
index c788b06..6152c8a 100644
--- a/src/LevelEndScene.c
+++ b/src/LevelEndScene.c
@@ -48,6 +48,9 @@ void LevelEndScene_Init(GameWindow *pGameWindow)
     
     GetBoxRect(pContentRect, BottomRight, &r);
     CenterRect(&r, &(pGameWindow->LevelEndScene.NextButtonRect));
+    
+    // Play done sound
+    Sounds_PlayDoneSnd(&(pGameWindow->Sounds));
 }
 
 void LevelEndScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
@@ -85,11 +88,13 @@ void LevelEndScene_Click(GameWindow *pGameWindow, const Point *pPosition)
 {
     if (PtInRect(*pPosition, &(pGameWindow->LevelEndScene.RetryButtonRect)))
     {
+        Sounds_PlayRetrySnd(&(pGameWindow->Sounds));
         GameEngine_ResetLevel(&(pGameWindow->Engine));
         GameWindow_SetScene(pGameWindow, Play);
     }
     else if (PtInRect(*pPosition, &(pGameWindow->LevelEndScene.NextButtonRect)))
     {
+        Sounds_PlayClickSnd(&(pGameWindow->Sounds));
         GameEngine_NextLevel(&(pGameWindow->Engine));
         GameWindow_SetScene(pGameWindow, GameEngine_IsGameOver(&(pGameWindow->Engine)) ? GameEnd : Play);
     }
diff --git a/src/MacLO.c b/src/MacLO.c
index 4863ef9..8a89295 100644
--- a/src/MacLO.c
+++ b/src/MacLO.c
@@ -199,7 +199,7 @@ void MacLO_HandleAppleMenuChoice(const int16_t item)
 void MacLO_ShowAboutDialog()
 {
     DialogPtr dialog;
-    int itemHit;
+    int32_t itemHit;
     
     dialog = GetNewDialog(AboutDialogResID, nil, MoveToFront);
     
@@ -222,7 +222,6 @@ void MacLO_LaunchAppleMenuItem(const int16_t item)
     appleMenu = GetMHandle(AppleMenuResID);
     GetItem(appleMenu, item, accName);
     OpenDeskAcc(accName);
-    
 }
 
 void MacLO_HandleGameMenuChoice(const int16_t item)
diff --git a/src/MacLO.pi.bin b/src/MacLO.pi.bin
index 829953b..ff7f326 100644
Binary files a/src/MacLO.pi.bin and b/src/MacLO.pi.bin differ
diff --git a/src/MacLO.pi.rsrc.bin b/src/MacLO.pi.rsrc.bin
index cf1de4c..99d58e0 100644
Binary files a/src/MacLO.pi.rsrc.bin and b/src/MacLO.pi.rsrc.bin differ
diff --git a/src/PlayScene.c b/src/PlayScene.c
index 7ca1738..e265aee 100644
--- a/src/PlayScene.c
+++ b/src/PlayScene.c
@@ -9,11 +9,9 @@
 #define LightMargin         6
 #define LightSize           50
 #define LightCornerSize     12
-#define PlayfieldPattern    ltGray
 
 #define HUDMargin     PlayfieldMargin
 #define HUDCornerSize PlayfieldCornerSize
-#define HUDPattern    PlayfieldPattern
 
 #define LevelTextScale 3
 #define HalfStarScale  2
@@ -66,6 +64,11 @@ void PlayScene_Init(GameWindow *pGameWindow)
     
     GetBoxRect(&(pGameWindow->PlayScene.HUDRect), BottomLeft, &r);
     CenterRect(&r, &(pGameWindow->PlayScene.RetryButtonRect));
+    
+    // Setup sound button
+    Bitmaps_GetSoundRect(&(pGameWindow->Bitmaps), pGameWindow->Sounds.Enabled, 1, &(pGameWindow->PlayScene.SoundButtonRect));
+    GetBoxRect(&(pGameWindow->PlayScene.HUDRect), BottomRight, &r);
+    CenterRect(&r, &(pGameWindow->PlayScene.SoundButtonRect));
 }
 
 void PlayScene_SetLightRect(const GameWindow *pGameWindow, Rect *pRect, const int8_t c, const int8_t r)
@@ -86,7 +89,6 @@ void PlayScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
         // Fill backgrounds
         ForeColor(whiteColor);
         FrameRoundRect(&(pGameWindow->PlayScene.PlayfieldRect), PlayfieldCornerSize, PlayfieldCornerSize);
-        FrameRoundRect(&(pGameWindow->PlayScene.HUDRect), HUDCornerSize, HUDCornerSize);
         ForeColor(blackColor);
     }
     
@@ -138,6 +140,11 @@ void PlayScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
     
     // Draw retry button
     DrawPicture(pGameWindow->Bitmaps.RetryButtonPict, &(pGameWindow->PlayScene.RetryButtonRect));
+    
+    // Draw sound button
+    MoveTo(pGameWindow->PlayScene.SoundButtonRect.left, pGameWindow->PlayScene.SoundButtonRect.top);
+    Bitmaps_DrawSound(&(pGameWindow->Bitmaps), pGameWindow->Sounds.Enabled, 1);
+
 }
 
 void PlayScene_Click(GameWindow *pGameWindow, const Point *pPosition)
@@ -156,6 +163,7 @@ void PlayScene_Click(GameWindow *pGameWindow, const Point *pPosition)
                 
                 if (PtInRect(*pPosition, &lightRect))
                 {
+                    Sounds_PlayClickSnd(&(pGameWindow->Sounds));
                     GameEngine_ToggleLights(&(pGameWindow->Engine), c, r);
                     GameWindow_Draw(pGameWindow, false);
                     break;
@@ -176,8 +184,14 @@ void PlayScene_Click(GameWindow *pGameWindow, const Point *pPosition)
         
         if (PtInRect(*pPosition, &(pGameWindow->PlayScene.RetryButtonRect)))
         {
+            Sounds_PlayRetrySnd(&(pGameWindow->Sounds));
             GameEngine_ResetLevel(&(pGameWindow->Engine));
             GameWindow_Draw(pGameWindow, false);
         }
+        else if (PtInRect(*pPosition, &(pGameWindow->PlayScene.SoundButtonRect)))
+        {
+            pGameWindow->Sounds.Enabled = !pGameWindow->Sounds.Enabled;
+            GameWindow_Draw(pGameWindow, false);
+        }
     }
 }
diff --git a/src/Scenes.h b/src/Scenes.h
index f712b83..597de22 100644
--- a/src/Scenes.h
+++ b/src/Scenes.h
@@ -19,6 +19,7 @@ typedef struct sTitleScene
     Rect TitleRect;
     Rect SetARect;
     Rect SetBRect;
+    Rect SoundButtonRect;
 } TitleScene;
 
 typedef struct sPlayScene
@@ -29,6 +30,7 @@ typedef struct sPlayScene
     Rect HalfStarsRect;
     Rect ScoreRect;
     Rect RetryButtonRect;
+    Rect SoundButtonRect;
 } PlayScene;
 
 typedef struct sLevelEndScene
diff --git a/src/Sounds.c b/src/Sounds.c
new file mode 100644
index 0000000..00c2731
--- /dev/null
+++ b/src/Sounds.c
@@ -0,0 +1,60 @@
+// Copyright (c) Jon Thysell <http://jonthysell.com>
+// Licensed under the MIT License.
+
+#include "Sounds.h"
+
+#define ClickSndResID BaseResID
+#define RetrySndResID (ClickSndResID + 1)
+#define DoneSndResID  (RetrySndResID + 1)
+
+#define DefaultEnabled  true
+#define PlaySoundsAsync true
+
+void Sounds_Init(Sounds *pSounds)
+{
+    pSounds->Enabled = DefaultEnabled;
+    
+    SndNewChannel(&(pSounds->SndChannel), 0, 0, nil);
+    
+    pSounds->ClickSnd = GetResource('snd ', ClickSndResID);
+    if (pSounds->ClickSnd == nil)
+    {
+        ShowError("\pClick snd resource missing!", true);
+    }
+    
+    pSounds->RetrySnd = GetResource('snd ', RetrySndResID);
+    if (pSounds->RetrySnd == nil)
+    {
+        ShowError("\pRetry snd resource missing!", true);
+    }
+    
+    pSounds->DoneSnd = GetResource('snd ', DoneSndResID);
+    if (pSounds->DoneSnd == nil)
+    {
+        ShowError("\pDone snd resource missing!", true);
+    }
+}
+
+void Sounds_PlayClickSnd(const Sounds *pSounds)
+{
+    if (pSounds->Enabled)
+    {
+        SndPlay(pSounds->SndChannel, pSounds->ClickSnd, PlaySoundsAsync);
+    }
+}
+
+void Sounds_PlayRetrySnd(const Sounds *pSounds)
+{
+    if (pSounds->Enabled)
+    {
+        SndPlay(pSounds->SndChannel, pSounds->RetrySnd, PlaySoundsAsync);
+    }
+}
+
+void Sounds_PlayDoneSnd(const Sounds *pSounds)
+{
+    if (pSounds->Enabled)
+    {
+        SndPlay(pSounds->SndChannel, pSounds->DoneSnd, PlaySoundsAsync);
+    }
+}
diff --git a/src/Sounds.h b/src/Sounds.h
new file mode 100644
index 0000000..67cc9f4
--- /dev/null
+++ b/src/Sounds.h
@@ -0,0 +1,26 @@
+// Copyright (c) Jon Thysell <http://jonthysell.com>
+// Licensed under the MIT License.
+
+#ifndef SOUNDS_H
+#define SOUNDS_H
+
+#include <Sound.h>
+
+#include "MacCommon.h"
+
+typedef struct sSounds
+{
+    bool          Enabled;
+    SndChannelPtr SndChannel;
+    Handle        ClickSnd;
+    Handle        RetrySnd;
+    Handle        DoneSnd;
+} Sounds;
+
+void Sounds_Init(Sounds *pSounds);
+
+void Sounds_PlayClickSnd(const Sounds *pSounds);
+void Sounds_PlayRetrySnd(const Sounds *pSounds);
+void Sounds_PlayDoneSnd(const Sounds *pSounds);
+
+#endif
diff --git a/src/TitleScene.c b/src/TitleScene.c
index 1b3a283..ee3ebc9 100644
--- a/src/TitleScene.c
+++ b/src/TitleScene.c
@@ -12,17 +12,24 @@ void TitleScene_Init(GameWindow *pGameWindow)
     
     const Rect *pContentRect = &(pGameWindow->Window->portRect);
     
-    // Setup rects
+    // Setup Title
     GetPictureRect(pGameWindow->Bitmaps.TitlePict, &(pGameWindow->TitleScene.TitleRect));
     CenterRect(pContentRect, &(pGameWindow->TitleScene.TitleRect));
     
-    GetBoxRect(pContentRect, BottomLeft, &r);
+    // Setup Set A
     GetScaledPicFrame(pGameWindow->Bitmaps.ACharPict, TitleTextScale, &(pGameWindow->TitleScene.SetARect));
+    GetBoxRect(pContentRect, BottomLeft, &r);
     CenterRect(&r, &(pGameWindow->TitleScene.SetARect));
     
-    GetBoxRect(pContentRect, BottomRight, &r);
+    // Setup Set B
     GetScaledPicFrame(pGameWindow->Bitmaps.BCharPict, TitleTextScale, &(pGameWindow->TitleScene.SetBRect));
+    GetBoxRect(pContentRect, BottomRight, &r);
     CenterRect(&r, &(pGameWindow->TitleScene.SetBRect));
+    
+    // Setup sound button
+    Bitmaps_GetSoundRect(&(pGameWindow->Bitmaps), pGameWindow->Sounds.Enabled, TitleTextScale, &(pGameWindow->TitleScene.SoundButtonRect));
+    GetBoxRect(pContentRect, Bottom, &r);
+    CenterRect(&r, &(pGameWindow->TitleScene.SoundButtonRect));
 }
 
 void TitleScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
@@ -37,18 +44,29 @@ void TitleScene_Draw(const GameWindow *pGameWindow, bool fullRefresh)
     // Draw Set B
     MoveTo(pGameWindow->TitleScene.SetBRect.left, pGameWindow->TitleScene.SetBRect.top);
     Bitmaps_DrawBChar(&(pGameWindow->Bitmaps), TitleTextScale);
+    
+    // Draw sound button
+    MoveTo(pGameWindow->TitleScene.SoundButtonRect.left, pGameWindow->TitleScene.SoundButtonRect.top);
+    Bitmaps_DrawSound(&(pGameWindow->Bitmaps), pGameWindow->Sounds.Enabled, TitleTextScale);
 }
 
 void TitleScene_Click(GameWindow *pGameWindow, const Point *pPosition)
 {
     if (PtInRect(*pPosition, &(pGameWindow->TitleScene.SetARect)))
     {
+        Sounds_PlayClickSnd(&(pGameWindow->Sounds));
         GameEngine_NewGame(&(pGameWindow->Engine), false);
         GameWindow_SetScene(pGameWindow, Play);
     }
     else if (PtInRect(*pPosition, &(pGameWindow->TitleScene.SetBRect)))
     {
+        Sounds_PlayClickSnd(&(pGameWindow->Sounds));
         GameEngine_NewGame(&(pGameWindow->Engine), true);
         GameWindow_SetScene(pGameWindow, Play);
     }
+    else if (PtInRect(*pPosition, &(pGameWindow->TitleScene.SoundButtonRect)))
+    {
+        pGameWindow->Sounds.Enabled = !pGameWindow->Sounds.Enabled;
+        GameWindow_Draw(pGameWindow, false);
+    }
 }