What I was trying to ask before my keyboard went nuts was if anyone has burned CD-R's in MP3 format to play on their factory stereo. I burned a CD-R w/ +160 songs on it for my friend, and he said it didn't work. It said loading, and would never start playing. I burned the CD-R as data (isn't that the same as MP3 ?). It works on my computers, but could I have done it wrong ? How do I make it work right ?