Audio autostart not working

I am not sure whether this is a security issue or not, but anyway:
I use Comodo dragon, on my website I have an audio player which is set to start playing automatically when the site opens, but it does not.

I am on Windows 8.1 64 bit with 6 Gb of RAM.
The player works, but not the autostart, and that does work in other browsers.

Just in case, here is the code for the player:

<script>(function (win, doc, script, source, objectName) { (win.RadionomyPlayerObject = win.RadionomyPlayerObject || []).push(objectName); win[objectName] = win[objectName] || function (k, v) { (win[objectName].parameters = win[objectName].parameters || { src: source, version: '1.1' })[k] = v; }; var js, rjs = doc.getElementsByTagName(script)[0]; js = doc.createElement(script); js.async = 1; js.src = source; rjs.parentNode.insertBefore(js, rjs); }(window, document, 'script', '', 'radplayer'));
radplayer('url', 'vlaanderen-nationaal');
radplayer('type', 'mobile');
radplayer('autoplay', '1');
radplayer('volume', '10');
radplayer('color1', '#000000');
radplayer('color2', '#ffffff');
<div class="radionomy-player"></div>

PrivDog does not report any issues, so it does not seem to block anything.

Anyone who can help, please?
Thank you in advance.