diff --git a/card.js b/card.js
index 867d405..9919018 100644
--- a/card.js
+++ b/card.js
@@ -12,30 +12,71 @@
    * @param {string} [description]
    * @param {Object} [styles]
    */
-  MemoryGame.Card = function (image, id, alt, l10n, description, styles) {
+  MemoryGame.Card = function (image, id, alt, l10n, description, styles, audio) {
     /** @alias H5P.MemoryGame.Card# */
     var self = this;
 
     // Initialize event inheritance
     EventDispatcher.call(self);
 
-    var path = H5P.getPath(image.path, id);
-    var width, height, $card, $wrapper, removedState, flippedState;
+    var path, width, height, $card, $wrapper, removedState, flippedState, audioPlayer;
 
     alt = alt || 'Missing description'; // Default for old games
 
-    if (image.width !== undefined && image.height !== undefined) {
-      if (image.width > image.height) {
-        width = '100%';
-        height = 'auto';
+    if (image && image.path) {
+      path = H5P.getPath(image.path, id);
+
+      if (image.width !== undefined && image.height !== undefined) {
+        if (image.width > image.height) {
+          width = '100%';
+          height = 'auto';
+        }
+        else {
+          height = '100%';
+          width = 'auto';
+        }
       }
       else {
-        height = '100%';
-        width = 'auto';
+        width = height = '100%';
       }
     }
-    else {
-      width = height = '100%';
+
+    if (audio) {
+      // Check if browser supports audio.
+      audioPlayer = document.createElement('audio');
+      if (audioPlayer.canPlayType !== undefined) {
+        // Add supported source files.
+        for (var i = 0; i < audio.length; i++) {
+          if (audioPlayer.canPlayType(audio[i].mime)) {
+            var source = document.createElement('source');
+            source.src = H5P.getPath(audio[i].path, id);
+            source.type = audio[i].mime;
+            audioPlayer.appendChild(source);
+          }
+        }
+      }
+
+      if (!audioPlayer.children.length) {
+        audioPlayer = null; // Not supported
+      }
+      else {
+        audioPlayer.controls = false;
+        audioPlayer.preload = 'auto';
+
+        var handlePlaying = function () {
+          if ($card) {
+            $card.addClass('h5p-memory-audio-playing');
+          }
+        };
+        var handleStopping = function () {
+          if ($card) {
+            $card.removeClass('h5p-memory-audio-playing');
+          }
+        };
+        audioPlayer.addEventListener('play', handlePlaying);
+        audioPlayer.addEventListener('ended', handleStopping);
+        audioPlayer.addEventListener('pause', handleStopping);
+      }
     }
 
     /**
@@ -74,6 +115,10 @@
         return;
       }
 
+      if (audioPlayer) {
+        audioPlayer.play();
+      }
+
       $card.addClass('h5p-flipped');
       self.trigger('flip');
       flippedState = true;
@@ -83,6 +128,11 @@
      * Flip card back.
      */
     self.flipBack = function () {
+      if (audioPlayer) {
+        audioPlayer.pause();
+        audioPlayer.currentTime = 0;
+      }
+
       self.updateLabel(null, null, true); // Reset card label
       $card.removeClass('h5p-flipped');
       flippedState = false;
@@ -100,6 +150,11 @@
      * Reset card to natural state
      */
     self.reset = function () {
+      if (audioPlayer) {
+        audioPlayer.pause();
+        audioPlayer.currentTime = 0;
+      }
+
       self.updateLabel(null, null, true); // Reset card label
       flippedState = false;
       removedState = false;
@@ -133,7 +188,7 @@
       $wrapper = $('<li class="h5p-memory-wrap" tabindex="-1" role="button"><div class="h5p-memory-card">' +
                   '<div class="h5p-front"' + (styles && styles.front ? styles.front : '') + '>' + (styles && styles.backImage ? '' : '<span></span>') + '</div>' +
                   '<div class="h5p-back"' + (styles && styles.back ? styles.back : '') + '>' +
-                    '<img src="' + path + '" alt="' + alt + '" style="width:' + width + ';height:' + height + '"/>' +
+                    (path ? '<img src="' + path + '" alt="' + alt + '" style="width:' + width + ';height:' + height + '"/>' + (audioPlayer ? '<div class="h5p-memory-audio-button"></div>' : '') : '<i class="h5p-memory-audio-instead-of-image">') +
                   '</div>' +
                 '</div></li>')
         .appendTo($container)
@@ -176,6 +231,19 @@
             self.flip();
           })
           .end();
+
+      if (audioPlayer) {
+        $card.children('.h5p-back')
+          .click(function () {
+            if ($card.hasClass('h5p-memory-audio-playing')) {
+              audioPlayer.pause();
+              audioPlayer.currentTime = 0;
+            }
+            else {
+              audioPlayer.play();
+            }
+          })
+      }
     };
 
     /**
@@ -236,8 +304,9 @@
    */
   MemoryGame.Card.isValid = function (params) {
     return (params !== undefined &&
-            params.image !== undefined &&
-            params.image.path !== undefined);
+             (params.image !== undefined &&
+             params.image.path !== undefined) ||
+           params.audio);
   };
 
   /**
@@ -249,8 +318,9 @@
    */
   MemoryGame.Card.hasTwoImages = function (params) {
     return (params !== undefined &&
-            params.match !== undefined &&
-            params.match.path !== undefined);
+             (params.match !== undefined &&
+              params.match.path !== undefined) ||
+           params.matchAudio);
   };
 
   /**
diff --git a/library.json b/library.json
index 16b8145..9092305 100644
--- a/library.json
+++ b/library.json
@@ -2,8 +2,8 @@
   "title": "Memory Game",
   "description": "See how many cards you can remember!",
   "majorVersion": 1,
-  "minorVersion": 2,
-  "patchVersion": 12,
+  "minorVersion": 3,
+  "patchVersion": 0,
   "runnable": 1,
   "author": "Joubel",
   "license": "MIT",
@@ -54,4 +54,4 @@
       "minorVersion": 3
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/memory-game.css b/memory-game.css
index c188210..1b53971 100644
--- a/memory-game.css
+++ b/memory-game.css
@@ -318,3 +318,28 @@
 .h5p-memory-game .h5p-programatically-focusable {
   outline: none;
 }
+.h5p-memory-audio-instead-of-image {
+  font-family: 'H5PFontAwesome4';
+  width: 100%;
+  height: 100%;
+  font-style: normal;
+  color: #404040;
+  font-size: 2em;
+}
+.h5p-memory-audio-button {
+  position: absolute;
+  top: 0;
+  right: 0;
+  font-family: 'H5PFontAwesome4';
+  width: 1em;
+  height: 1em;
+  line-height: 1;
+}
+.h5p-memory-audio-instead-of-image:before,
+.h5p-memory-audio-button:before {
+  content: "\f026";
+}
+.h5p-memory-audio-playing .h5p-memory-audio-instead-of-image:before,
+.h5p-memory-audio-playing .h5p-memory-audio-button:before {
+  content: "\f028";
+}
diff --git a/memory-game.js b/memory-game.js
index 38829de..07bbd0d 100644
--- a/memory-game.js
+++ b/memory-game.js
@@ -384,16 +384,16 @@ H5P.MemoryGame = (function (EventDispatcher, $) {
       var cardParams = cardsToUse[i];
       if (MemoryGame.Card.isValid(cardParams)) {
         // Create first card
-        var cardTwo, cardOne = new MemoryGame.Card(cardParams.image, id, cardParams.imageAlt, parameters.l10n, cardParams.description, cardStyles);
+        var cardTwo, cardOne = new MemoryGame.Card(cardParams.image, id, cardParams.imageAlt, parameters.l10n, cardParams.description, cardStyles, cardParams.audio);
 
         if (MemoryGame.Card.hasTwoImages(cardParams)) {
           // Use matching image for card two
-          cardTwo = new MemoryGame.Card(cardParams.match, id, cardParams.matchAlt, parameters.l10n, cardParams.description, cardStyles);
+          cardTwo = new MemoryGame.Card(cardParams.match, id, cardParams.matchAlt, parameters.l10n, cardParams.description, cardStyles, cardParams.matchAudio);
           cardOne.hasTwoImages = cardTwo.hasTwoImages = true;
         }
         else {
           // Add two cards with the same image
-          cardTwo = new MemoryGame.Card(cardParams.image, id, cardParams.imageAlt, parameters.l10n, cardParams.description, cardStyles);
+          cardTwo = new MemoryGame.Card(cardParams.image, id, cardParams.imageAlt, parameters.l10n, cardParams.description, cardStyles, cardParams.audio);
         }
 
         // Add cards to card list for shuffeling
diff --git a/semantics.json b/semantics.json
index 0333ce0..4108971 100644
--- a/semantics.json
+++ b/semantics.json
@@ -33,6 +33,15 @@
           "importance": "high",
           "description": "Describe what can be seen in the photo. The text is read by text-to-speech tools needed by visually impaired users."
         },
+        {
+          "state": "new",
+          "name": "audio",
+          "type": "audio",
+          "importance": "high",
+          "label": "Audio Track",
+          "description": "An optional sound that plays when the card is turned.",
+          "optional": true
+        },
         {
           "name": "match",
           "type": "image",
@@ -50,6 +59,15 @@
           "optional": true,
           "description": "Describe what can be seen in the photo. The text is read by text-to-speech tools needed by visually impaired users."
         },
+        {
+          "state": "new",
+          "name": "matchAudio",
+          "type": "audio",
+          "importance": "low",
+          "label": "Matching Audio Track",
+          "description": "An optional sound that plays when the second card is turned.",
+          "optional": true
+        },
         {
           "name": "description",
           "type": "text",
@@ -207,4 +225,4 @@
       }
     ]
   }
-]
\ No newline at end of file
+]