Reproducing method, reproducing apparatus, recording method, and recording apparatus.

摘要

A reproducing method, reproducing apparatus, recording method and recording apparatus provide read/record data in an efficient way to a storage medium. The reproducing method includes the steps of selecting one of a plurality of tracks described in a play order table designating an order of reproduction of the tracks; reading track information corresponding to the selected track from a track information table which includes a coding system and a decryption key corresponding to each track, and a plurality of items of track information each of which has pointer information pointing to one of a plurality of items of part information within a part information table; reading the part information corresponding to the pointer information within the read track information, each of the plurality ofitems of part information having part pointer information pointing to part of a single audio file; reading that part of the audio file which corresponds to the part pointer information within the read part information; and decrypting the read part of the audio file based on the decryption key and the coding system.