Abstract: The present invention relates to a method for transmitting files based on network digital signage system comprising (1) obtaining an authentication from a media server upon starting a network media player file server (NMP FS); (2) making an initiation of the NMP FS; (3) delivering a command to the NMP FS; (4) delivering schedule information to the NMP FS; and (5) transmitting media files from the media server to the NMP FS.