CDs and DVDs play from the inside out. http://electronics.howstuffworks.com/dvd2.htm http://electronics.howstuffworks.com/dvd2.htm http://electronics.howstuffworks.com/dvd2.htm http://electronics.howstuffworks.com/dvd2.htm electronics.howstuffworks.com http://electronics.howstuffworks.com/dvd2.htm electronics.howstuffworks.com http://electronics.howstuffworks.com/dvd2.htm