diff --git a/node-server/assets/Roman.html b/node-server/assets/Roman.html
index ebf5296..0f6c6cb 100644
--- a/node-server/assets/Roman.html
+++ b/node-server/assets/Roman.html
@@ -43,8 +43,9 @@
       <button id="forward">10s +</button>
     </div>
 
-    <audio id="audio-forward" src="song_to_song_v4.mp3"></audio>
-    <audio id="audio-reverse" src="song_to_song_v4_reverse.mp3"></audio>
+    <audio id="audio" 
+       src="song_to_song_v4.mp3" 
+       data-reverse-src="song_to_song_v4_reverse.mp3"></audio>
   </main>
 
   <script src="socket.io.min.js"></script>
diff --git a/node-server/assets/hell_even.html b/node-server/assets/hell_even.html
index 44e4ae6..4f085de 100644
--- a/node-server/assets/hell_even.html
+++ b/node-server/assets/hell_even.html
@@ -43,8 +43,9 @@
       <button id="forward">10s +</button>
     </div>
 
-    <audio id="audio-forward" src="paradisev2.mp3"></audio>
-    <audio id="audio-reverse" src="paradisev2_reverse.mp3"></audio>
+    <audio id="audio" 
+       src="paradisev2.mp3" 
+       data-reverse-src="paradisev2_reverse.mp3"></audio>
   </main>
   
   <script src="socket.io.min.js"></script>
diff --git a/node-server/assets/stamina.html b/node-server/assets/stamina.html
index 889f376..dc3dcf1 100644
--- a/node-server/assets/stamina.html
+++ b/node-server/assets/stamina.html
@@ -43,8 +43,9 @@
       <button id="forward">10s +</button>
     </div>
 
-    <audio id="audio-forward" src="stamina-v17.mp3"></audio>
-    <audio id="audio-reverse" src="stamina-v17_reverse.mp3"></audio>
+    <audio id="audio" 
+       src="stamina-v17.mp3" 
+       data-reverse-src="stamina-v17_reverse.mp3"></audio>
   </main>
 
   <script src="socket.io.min.js"></script>