Recent answers to Does Firefox support Flowplayer?https://support.mozilla.org/en-US/questions/9873622014-02-23T07:03:44-08:00Try to set the Boolean pref media.windows-media-foundation.enabled to false on the about:config page2014-02-23T07:03:44-08:00cor-elhttps://support.mozilla.org/en-US/questions/987362#answer-537174<p>Try to set the Boolean pref <b>media.windows-media-foundation.enabled</b> to <i>false</i> on the <b>about:config</b> page to disable built-in HTML5 media player.
</p><p>You can open the <b>about:config</b> page via the location bar
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<ul><li><a href="http://kb.mozillazine.org/about:config" rel="nofollow">http://kb.mozillazine.org/about:config</a>
</li></ul>Flowplayer API and JavaScript plugins are dependent on JavaScript 1.5 which is supported by the foll2014-02-22T14:21:11-08:00cbaba20https://support.mozilla.org/en-US/questions/987362#answer-536979<p>Flowplayer API and JavaScript plugins are dependent on JavaScript 1.5 which is supported by the following browsers:
Internet Explorer 6.0+
Firefox FF 2+
Safari 2.0+
Opera 9.0+
I think these two questions help us to sort out your question more easily:
Are you of using still using Firefox 1+&nbsp;??
Are disabled JavaScript support in browser settings??
At Firefox where JavaScript is mandatory,so before using try to enable javascript.
See Flowplayer docs:
<a href="http://flowplayer.org/docs/setup.html" rel="nofollow">http://flowplayer.org/docs/setup.html</a>
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