audio widget text label appears in Firefox 6.0.2 but not IE 9.0.8112.16421

Please view https://www.cecilvoice.com. My sidebar has two audio files, each having it’s own label. In Firefox the labels appear but in IE the labels appear for an instant but then disappear. Here’s the link to the audio widget’s code https://pasteit.com/15386
Please let me know if more information is required to help with this.