MP3 SONGS TRANSFER TO AUDIO CD

Question

I HAVE DOWNLOAD THE SONG FROM WEB, (YOUTUBE CONVERT TO MP3 FORMET) I HAVE TRANSFER AND BURN ON THE CD DISC, I CAN PLAY ON MY COMPUTER (MEDIA PLAYER) BUT I AM FAIL TO PLAY ON WMA MP3 CAR CD PLAYER.DO I HAVE TO USE THE ANY OTHER FORMET?OR ANY OTHER WAY TO CHANGE THE NECESSORY FORMET?WHERE TO FIND THIS?