Use this embed code to create an audio player for an audio file:
<embed type="application/x-shockwave-flash" wmode="transparent" src="http://www.google.com/reader/ui/3523697345-audio-player.swf?audioUrl=URLOFAUDIOFILE" height="27" width="320"></embed>
Click the EDIT button on your Google Sites page. Paste the updated embed code into the popup window under the <br> tag. Click UPDATE and then click SAVE.
A player using an audio file hosted on an external site:
A player using the file attached below:
To do this, just copy the link location of the file and remove everything after .mp3. Paste that link into the embed code above. Note: This is a large file and takes a few seconds to load.