Try cleaning the CD lens. Was it skipping before it stopped? You can use a CD lens cleaner. Mine was so bad that I had to pull the top cover of the radio open and use a cotton swap and alcohol to clean it.
its broke.
if you can't find one that is a new car take-out that'll work for cheap,
get a new stereo at one of many places,www.bought4less.com ios a good source, as are many others.