Hi atomnet,
Yes, it is possible to load audio from your server. As of the current version, you can do that by simply adding the following code into the HTML5 box:
<audio controls>
<source src="your_audio_file.ogg" type="audio/ogg">
<source src="your_audio_file.mp3" type="audio/mpeg">
Your browser does not support the audio tag.
</audio>
where ‘your_audio_file.ogg’ and ‘your_audio_file.mp3’ are the audio files on your server. The HTML5 box is currently available as a Premium feature.
Please let us know for any further information. Thank you for using Zedity!