Recording medium having data structure for managing main data and additional content data thereof and recording and reproducing methods and apparatuses

Recording medium having the additional data of the main data in accordance with the present invention, the main data and / or at least one clip file is saved, the data area including the additional content data of the main data; And and wherein the clip file includes a navigation area that is a clip information file is recorded with the information on whether or not containing additional content data. Recording medium, the main data, the additional data, content, clip files