Generally, we have two options to include a sound file on a HTML page:
Another option is to simply include a link to the file like this:
<a href="http://example.mp3" type="audio/x-mpeg" title="MP3 audiofile , ... kB">example.mp3 </a>
This is the standard way Plone includes files into the visual editor.
The advantage of this approach is that virtually everyone is able to access the file in some way. What happens with the file after it has been downloaded depends on the client browser and how it is configured. The shortcoming of this method is that we depend on an external player to listen to the audio. Probably one needs to download the file and start the player manually.