Sound notifications Alerts and Conversations

In your PAGE_CONTAINER template look for:

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And add below:

Code:

<xf:if is="{$xf.visitor.conversations_unread}">
    <audio src="http://s1download-universal-soundbank.com/mp3/sounds/9756.mp3" autoplay></audio>
</xf:if>
<xf:if is="{$xf.visitor.alerts_unread}">
    <audio src="http://s1download-universal-soundbank.com/mp3/sounds/newemail.mp3" autoplay></audio>
</xf:if>

This code allows you to add 2...

Sound notifications Alerts and Conversations

source https://xfworld.net/threads/sound-notifications-alerts-and-conversations.44861/