Some songs do not show up or playback on the player. � The audio file might be corrupted, try to playback the file on your PC first. If it does not play, rip the song again. � Songs with bit rates higher than 320kbps are not supported by the player. � This player does not support copyright protected (DRM) WMA tracks bought from online music stores, only unprotected WMA files can be played back on this player. The song is in a format that is not supported by the player. Only MP3, WMA are supported.