Audio Systems: 95 Pontiac Bonneville- tape player wont take cd-player adapter, portable cd player, pontiac bonneville

Question
I just got this car and for the first 3 days it would play the tape adapter for my portable cd player.....after 3 days i tried to put the tape in and now all i get is a E 13 message.....what can i do

Answer
there is nothing worng that is how the radio works it is a tape player and it was made to play  45 minutes tape if you use 60 minutes or 90 minutes tape they void your warranty that was 10 years ago
you need to plug your mp3 in to the back of the radio using the cd changer plug