I DOWNLOADED SOME MUSIC A WEEK AGO AND NOW MY WHOLE PLAYLIST IS UNPLAYABLE. EVEN WHEN I TRANSFERRED MY PLAYLIST TO WINDOWS MESIA PLAYER IT DIES NOT PLAY AND THE SONGS TURNED ORANGE AND HAVE AN ! IN FRONT OF THEM. WHAT DID I DO WRONG? ANOTHER THINGS IS WHATS THE BESY WAY TO TRANSFTER SONGS TO MESDIA PLAYER.