diff --git a/packages/cli/src/templates/swiss-grid/index.html b/packages/cli/src/templates/swiss-grid/index.html
index 6d6de8324..0f41976b0 100644
--- a/packages/cli/src/templates/swiss-grid/index.html
+++ b/packages/cli/src/templates/swiss-grid/index.html
@@ -149,11 +149,11 @@
         data-track-index="4"
       ></div>
 
-      <!-- Sound Effects -->
-      <audio id="sfx-intro" data-start="0" data-track-index="5" data-duration="1" src=""></audio>
-      <audio id="sfx-stat1" data-start="1.86" data-track-index="5" data-duration="1" src=""></audio>
-      <audio id="sfx-stat2" data-start="4.68" data-track-index="5" data-duration="1" src=""></audio>
-      <audio id="sfx-stat3" data-start="8.88" data-track-index="5" data-duration="1" src=""></audio>
+      <!-- Sound Effects (src set dynamically; omitted to avoid 404s) -->
+      <audio id="sfx-intro" data-start="0" data-track-index="5" data-duration="1"></audio>
+      <audio id="sfx-stat1" data-start="1.86" data-track-index="5" data-duration="1"></audio>
+      <audio id="sfx-stat2" data-start="4.68" data-track-index="5" data-duration="1"></audio>
+      <audio id="sfx-stat3" data-start="8.88" data-track-index="5" data-duration="1"></audio>
 
       <script>
         window.__timelines = window.__timelines || {};