it's cause they are using flash for audio if not IE9 or greater (as in IE10). you can force html5 audio instead of flash audio using this link:
http://www.cuttherope.ie/?html5audio=true
Let me know if that works.
http://www.cuttherope.ie/?html5audio=true
Let me know if that works.
Yup, doesn't even try to load Flash at all now, great!