My widget was rotating then, I tried add music to a post using my theme's options. Now it is no longer rotating. I'm thinking it has to do with this: 10. Testimonials widget is not showing or rotating
The usual problem is that jQuery is included twice. Once by WordPress and again by a theme. Remove the jQuery version included by your theme and you should be fine.
But, I have no idea what you mean by this. Can you please explain this further?