I admit that I never seriously studied Einstein's equations or quantum physics, but this book gave me a great outline of the development of modern physics. I am now motivated to listen to other audiobooks on modern physics or even get some paper books that contain equations. Michio Kaku is also good at depicting human side of Einstein and other physicists. It's fun to think about Einstein writing numerous love letters. I also never imagined that Schrödinger was a serious womanizer!
I admit up front that I have a strong interest in this topic (relativity) but have only recently tried to better understand it. Professor Wolfson does a terrific job of keeping the explanations simple and easy to understand. He moves along quickly, so the listener needs to stay focused. But I really enjoyed listening to this and professor Wolfson makes it easy to listen to. If you want to have a basic understanding of relativity, this is a great audio book to start with. I strongly recommend this.