I am trying to play an MP3 file with the JPlayer module.

I spent a good bit of time trying to figure out why the JPlayer isn't working in IE, including applying the patch described here: http://drupal.org/node/1192826 (I was getting that undefined variable error message)
Still didn't work in IE

Finally, I tried changing the theme. It works in all the other themes (including another Omega HTML5 sub theme) But not in Respond!