I suspect theres a problem w/t my laptops cd burner but...sometimes they play on my dvd player...but not in car cd player. But if I burn them w/t same software in my desktop pc they play everywhere...car cd..dvd. I've tried everything every software every CD-r type. Luckiest I've been was to get CD-r to play in dvd player. . .but wont work in CAR, like it does if I burn on my desktop pc.