CD error message in car?

hey I need to know if anyone knows about this thing i'm getting in my car... i got some songs from my limewire to a CD and i tried to put it in my car CD player but it won't work. I get an "Error" message. I thought maybe it was me copying the CD wrong, so i redid it but the same thing happened. It doesnt want to play in my car. I have a 2000 Saturn Vue. Anyone know what i should do...? the first CD i made worked, but not the one i made today and i did it twice already... which is a waste of 2 CDs... help.. hehe.