Audio player breaking sidebar widget

So I have a website that promotes a podcast that I’m a co-host of. Each week I would like to have an audio player that sits on the sidebar as a widget and allows users to click “play” and listen to our latest episode. I found a great plugin called Simple Audio Player that adds a tiny audio player to the sidebar and it looks fantastic.

The problem is that when I add the player to the sidebar, it stretches an audio bar across the whole right side of the page and throws another random one on the left side. I’ve had this plugin function just fine before but sometimes posts that we publish will break it again. I already tried resizing featured images and that did nothing.

The problem looks like this:
http://i.imgur.com/1bCyhxA.png

The funny thing is that the audio player isn’t even suppose to look like that. If I use the same HTML or shortcode on an actual published post, it uses the style that it is suppose to.

Here is a link to the plugin here:
http://www.internoetics.com/2010/12/14/wordpress-audio-player-and-shortcode/

Our website is thegamingoutsider.com

Any help would be greatly appreciated. Thanks!