<object type="application/x-shockwave-flash" width="400" height="170"
<param name="movie" value="xspf_player.swf?playlist_url=test.xspf&volume_level=50" />
Here I have set the volume to 50% (50). Notice that you must set volume_level in both the data attribute and the param element. Otherwise behavior will not be consistent from browser to browser.
For Flash HatersIf, for whatever reason, you refuse to use Flash on your website, you probably need this feature even more, because you don't have any control over what the default volume level of the embedded player might be. You can address this by setting the volume attribute of the <embed> element to 100 (meaning 100%), like this:
Some embedded players might not respect the volume attribute. If you don't like this lack of control, use Flash.
For more information, see How do I embed sound and music in a page?
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