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:
The sound of high winds created by synthesiser. The pitch variations were created by changing the filter cut-off frequency. Part of my Atmospheres and Soundscapes 2 pack which consists of sounds designed for use in music projects or as backgrounds intros and soundscapes for film and games.