A non-transitory tangible recording medium storing AV data having a system stream file is provided. The system stream file is played by a playback device. The system stream file includes an individual decryption key and a common decryption key. The individual decryption key is owned individually by each of multiple playback devices. The common decryption key is owned in common by the playback devices. The system stream file includes a first system stream file to be played back using both the individual decryption key and the common decryption key. The system stream file also includes a second system stream file to be played back using only the common decryption key among the individual decryption key and the common decryption key.