SEMICONDUCTOR MEMORY CARD, REPRODUCING DEVICE, RECORDING DEVICE, REPRODUCING METHOD, RECORDING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a semiconductor memory card permitting to edit music contents even while protecting the copyright of music contents. SOLUTION: Plural AOB files contain plural AOB obtained by dividing an audio stream, and are enciphered by cryptographic keys different from each other. Track management information (TKI) is the information showing each of the plural tracks, and one-to-one or one-to-many of the corresponding relation with each audio object, and play list information (DPLI) shows the allocation of the reproduction order to each audio track when plural tracks are continuously reproduced.