Hi Everyone and Merry Christmas!

I'm new to this and have made a couple CD's of my favorite stuff...but I can't play them in my car stereo. I can play them on our house stereo at least. Hubby thinks it has something to do with the CD's I bought, but a guy at the stereo store said some stereos block downloaded music from playing because they're technically illegal. Does anyone know the answer to why some stereos will play a burned CD and some won't??

Thanks.