On GotSound.org we are using wavesurfer.js to play sounds in a browser.
It's works only in modern browsers supporting Web Audio.
MediaElement fallback to support old browsers like Internet Explorer not always works.
You can find more information about browser supported Web Audio API here.
Please, consider to upgrade your browes to one of the following:
A remix of Freesound 252834 and 17804. I took 252834 and course quantized it in Goldwave, then lowered the volume and mixed it with some of the static from 17804. Then I played the mix through my computer speakers and recorded it with my webcam to immitate the cheesy fake apparatus used by the ghost hunters TV series and the like.