<xen:if is="{$visitor.conversations_unread}">
<script>
document.write('<audio src="sound.mp3" autoplay></audio>');
</script>
</xen:if>
<xen:if is="{$visitor.alerts_unread}">
<script>
document.write('<audio src="sound2.mp3" autoplay></audio>');
</script>
</xen:if>