<source> - HTML 5

The <source> tag is used to specify multiple media resources for media elements, such as <video> and <audio>.
The <source> tag allows you to specify alternative video/audio 
files which the browser may choose from, based on its media type or codec support.

Syntax

    <audio controls>	  <source src="horse.ogg" type="audio/ogg">	  <source src="horse.mp3" type="audio/mpeg">	 	Your browser does not support the audio element.	</audio>

Example

    <audio controls>	  <source src="horse.ogg" type="audio/ogg">	  <source src="horse.mp3" type="audio/mpeg">	 	Your browser does not support the audio element.	</audio>

Output / Return Value

Limitations

Alternatives / See Also

Reference