Audio Tag Not Working in Safari

I recently uploaded some radio I worked on to my site, and it plays fine in both Chrome and FireFox, however when I test it in Safari, it simply says “loading.”

This is the code I’m using:

        <source src=“x.ogg" type="audio/ogg">

        <source src=“x.mp3" type="audio/mpeg">

        Your current browser does support this audio.    

Any ideas why this would be happening?