Right now my wife has a PC laptop that she uses to listen to her med school lectures. She has Firefox with a wmv extension that allows her to speed the lectures up while keeping the tone of the voice. I'm pretty sure it's called 2xAV. I want to give her my macbook, but it will be useless if she cannot have a 2xAV feature. Flip4Mac doesn't have 2xAV. Does anyone know how to do this on a Mac? Is it possible? Will I have to resort to loading windows on the Macbook? Will VMFusion or Parallels work well?