fix fistmas song

files/assets/event/js/music.js

@@ -1,4 +1,5 @@
-const audio = new Audio("{{song}}");
+const song = document.getElementById('fistmas-song').value;
+const audio = new Audio(song);
 audio.loop=true;
 
 audio.play();

files/templates/event/music.html

@@ -2,6 +2,7 @@
 	{% if not song %}
 		{% set path = "assets/event/media/music" %}
 		{% set song = "/" ~ path ~ "/" ~ listdir('files/' ~ path)|random() ~ '?v=45' %}
+		<input hidden id="fistmas-song" value="{{song}}">
 	{% endif %}
 	<script defer src="{{'event/js/music.js' | asset}}"></script>
 {% endif %}