The play and pause button are not displaying on the standard Wordpress player.

I have googled this issue and the only answer I found is to insert extra code into the .htaccess file. I was uncomfortable doing this but I tried it and it broke my site. Fortunately, I was able to quickly undo it. But I still do not have a play or pause button on my mp3 player. Apparently the issue has to do with svg. Any suggestions for how I can get the play and pause buttons to appear without risking my site? The page is: http://weac.org/professional-resources/more-resources/parent-tips/.