I just installed the plug in following the instructions.  I am now trying to have an Mp3 (mysong) play in an article.  I have Joomla installed in a directory (CMS) so I set the parameters to CMS/images/audio, uploaded the mp3 to that directory, pasted {mp3}mysong{/mp3} in where I want it (in HTML mode) and when I preview it the {mp3}mysong{/mp3} shows up as text in the article, but no player.  What am I missing?  Any help would be appreciated.