Hey Chad,
I am investigating your software for use in medical school (starting in fall 2011). What do you think about adding collapsible bullet points? That way, when students are reviewing material they can start out with a questions and hide the answer. After answering the question, the user could open the bullet point to see if they got it write or not. If the user needs clarification, then he/she could turn the audio on to listen to the professor.
Thanks!