anchor.diff:  </content:section>
   
   <content:aside>
  -    <h5 class="center"><fmt:message key="preview" /></h5>
  -    
  -    <div class="previewContainer valignwrapper">
  -        <img src="<spring:url value='/static/img/device-pixel-c.png' />" alt="<fmt:message key="preview" />" />
  -        <div id="previewContentContainer">
  -            <div id="previewContent" class="valign-wrapper" 
  -                 style="
  -                    background-image: url(<spring:url value='/image/${image.id}_r${image.revisionNumber}.${fn:toLowerCase(image.imageFormat)}' />);
  -                 ">
  -                <h5 class="white-text" style="
  -                    position: absolute; 
  -                    bottom: 0; 
  -                    width: 100%;
  -                    font-size: 2rem;
  -                    letter-spacing: .5em;
  -                    text-shadow: 1px 1px rgba(0,0,0, .8);
  -                    /*background-color: rgba(0,0,0, .1);*/
  -                    ">${image.title}</h5>
  -            </div>
  -        </div>
  -    </div>
  -    
  -    <script>
  -        $(function() {
  -            console.debug("dominantColor: ${image.dominantColor}");
  -            <c:if test="${not empty image.dominantColor}">
  -                $('#previewContent').css("background-color", "${image.dominantColor}");
  -                $('nav').removeClass("deep-purple");
  -                $('nav').css("background-color", "${image.dominantColor}");
  -            </c:if>
  -        });
  -    </script>
  +    <h5 class="center"><fmt:message key="audio" /></h5>
  +    
  +    <c:choose>
  +        <c:when test="${empty audio}">
  +            <div class="card-panel amber lighten-3">
  +                <b>Warning:</b> This image has no corresponding audio.
  +                <a href="<spring:url value='/content/multimedia/audio/create?transcription=${image.title}' />" target="_blank"><fmt:message key="add.audio" /> <i class="material-icons">launch</i></a>
  +            </div>
  +        </c:when>
  +        <c:otherwise>
  +            <audio controls="true" autoplay="true">
  +                <source src="<spring:url value='/audio/${audio.id}_r${audio.revisionNumber}.${fn:toLowerCase(audio.audioFormat)}' />" />
  +            </audio>
  +        </c:otherwise>
  +    </c:choose>
       
       <div class="divider" style="margin-top: 1em;"></div>
       
  
positive.code: 
  <content:section cssId="imageEditPage">
      <h4><content:gettitle /></h4>
      
      <c:choose>
          <c:when test="${empty audio}">
              <div class="card-panel amber lighten-3">
                  <b>Warning:</b> This image has no corresponding audio.
                  <a href="<spring:url value='/content/multimedia/audio/create?transcription=${image.title}' />" target="_blank"><fmt:message key="add.audio" /> <i class="material-icons">launch</i></a>
              </div>
          </c:when>
          <c:otherwise>
              <audio controls="true" autoplay="true">
                  <source src="<spring:url value='/audio/${audio.id}_r${audio.revisionNumber}.${fn:toLowerCase(audio.audioFormat)}' />" />
              </audio>
          </c:otherwise>
      </c:choose>
      
      <div class="card-panel">
          <form:form modelAttribute="image" enctype="multipart/form-data">
  
negative.code:             <form:hidden path="imageFormat" value="${image.imageFormat}" />
              <form:hidden path="contentType" value="${image.contentType}" />
              <form:hidden path="dominantColor" value="${image.dominantColor}" />
              
              <img 
                  src="<spring:url value='/image/${image.id}_r${image.revisionNumber}.${fn:toLowerCase(image.imageFormat)}' />"
                  alt="${image.title}" />
              <script>
                  $(function() {
                      console.debug("dominantColor: ${image.dominantColor}");
                      <c:if test="${not empty image.dominantColor}">
                          $('nav').removeClass("deep-purple");
                          $('nav').css("background-color", "${image.dominantColor}");
                      </c:if>
                  });
              </script>
  
              <div class="row">
                  <div class="input-field col s12">
  