These tags allow you to specify that audio be played through Windows Media Player Plugin if it is available, and if it isn’t, use an HTML5 audio tag.

<object id="wmp_p" data="audio.wav" type="application/x-ms-wmp" width="175" height="75" >
      <param name="autostart" value="true" />
      <param name="volume" value="10" />
      <param name="uiMode" value="mini" />
	<audio autoplay="autoplay" controls="controls" style="height:75px;width:175px">
		<source src="audio.wav" type="audio/wav" />
		No audio player available, download <a href="audio.wav" title="Download audio">audio.wav</a>
	</audio>
    </object>

This was tested under CentOS 5.4, with Firefox 10.0.2, and it worked nicely. It may also work well with Chrome under Linux, as well as under Windows.

Notes

• Different browser support different audio formats with the tag.
• There may be subtle coding differences between the tags and attributes. Test thoroughly and carefully.
• There may be layout issues across different browsers, again, test thoroughly and carefully.

Audio encoding that works well under CentOS/Firefox 10.0.2

sox -V input.wav -u -b -r 8000 -c 1 output.wav

sox: Writing Wave file: Microsoft PCM format, 1 channel, 8000 samp/sec
sox: 8000 byte/sec, 1 block align, 8 bits/samp