Text editors

I've successfully embedded mp3's in many quiz questions using this code:




...which Moodle changes to this:




...but now the player won't play some of my mp3's. It's strange because that same code is working very well in a lot of other questions - the problem only came up recently and is only happening in questions I'm now trying to edit. Editing breaks the ones that were working.

I've checked all my url's and that the player itself isn't broken.

Another confirmation of this problem is Moodle's flash player won't play the mp3's either. I didn't know Moodle had this player until I tried to direct-link to the mp3 and it showed up.




I found this really odd because Moodle is inserting that player because it's recognized my mp3, right? Somehow in the editing process Moodle is interfering with my html code. I looked at the page source and there doesn't seem to be anything unusual. I'm not at all fluent in javascript but I have a basic understanding of it.

I'm using Firefox 3.6.10
and I don't know how to figure out what version of Moodle I'm using.