Cd stuck in car siemens vdo cdr 500, stereo plays it fine but will not eject it, just says error cd and goes back to radio, i had trouble earlier and read just to wait and try again, which i did and the cd did come out so i have then put in a cd lens cleaner as suggested, which plays fine but i have tried every half hour or so all day and it will not eject, thank you for any help in advance. Louise x