allows continuing and stopping of audio, with slightly strange semantics

example/example.js

@@ -1,6 +1,7 @@
 var slides = [],
     slideData = [],
     current = 0,
+    activeAudio,
     timeout;
 
 
@@ -58,6 +59,9 @@ function start(idx) {
     } else if (data.video && data.video.length) {
         start_video(data)
     }
+    if (data.audioContainer) { // if there is an audio container, we always stop current audio
+        reset_active_audio();
+    }
     if (data.audio) {
         start_audio(data)
     }
@@ -71,7 +75,7 @@ function stop(idx) {
     } else if (data.video && data.video.length) {
         reset_video(data)
     }
-    if (data.audio) {
+    if (data.audio && !data.audioContinue) {
         reset_audio(data)
     }
 }
@@ -102,6 +106,8 @@ function load_slide(slide) {
     if (audio) {
         data.audio = audio.dataset.url // audio does not need to be an array
         data.audioContainer = audio
+        console.log('continue', audio.dataset.continue)
+        data.audioContinue = !!audio.dataset.continue
     }
     return data
 }
@@ -175,6 +181,7 @@ function start_audio(data) {
     data.audioEmbed.postMessage('options', {
         'paused': false
     })
+    activeAudio = data
 }
 
 function reset_video(data) {
@@ -189,6 +196,13 @@ function reset_audio(data) {
         'paused': true,
         'position': 0 //FIXME: figure correct audio reset
     })
+    activeAudio = null;
+}
+
+function reset_active_audio() {
+    if (activeAudio) {
+        reset_audio(activeAudio)
+    }
 }
 
 document.addEventListener('keydown', function(event) {

example/index.html

@@ -10,7 +10,7 @@
     <div class="title">
         At first, three stories from the year 1950 in Bombay
     </div>
-    <div class="audio" data-url="https://pad.ma/BVF/editor/F#embed"></div>
+    <div class="audio" data-continue="true" data-url="https://pad.ma/BVF/editor/F#embed"></div>
 </div>
 <div class="slide" data-duration="10">
     <div class="title">
@@ -25,6 +25,7 @@
          data-url_0="https://pad.ma/documents/AFL/0,0,6580,3763#embed"
          data-url_1="https://pad.ma/documents/AFL/1568,1461,3352,2401#embed"
          ></div>
+    <div class="audio"></div> <!-- signal to stop playing audio -->
 </div>
 <div class="slide" data-duration="10">
     <div class="title">