WAudio is a widget to play audio. It is a low-level widget,
mapping directly onto a
<audio> element available in HTML5
In almost every situation you should use
Usage of the audio element consists of adding one or more audio sources and setting some options.
Use the method
setAlternativeContent() to show alternative
content if the audio cannot be played. The alternative content can be any
widget; you can set it to an alternative media player (QuickTime, Flash,
...), show a Flash movie, an animated gif, a text, a poster image, ... .
There are two reasons why the browser may use the alternative content:
setAlternativeContent() may not be
called after the widget is rendered.