Patent ID: 7519276

Claim:
A method for dubbing audio on a writable recording medium, comprising the steps of: (A) simultaneously recording a main A/V stream and a dubbed audio stream corresponding to the main A/V stream on the writable recording medium, wherein the step (A) comprises the step of alternately carrying out a process of temporarily storing the dubbed audio stream in at least one buffer during the recording of the main A/V stream, and a process of temporarily storing the main A/V stream in the at least one buffer during the recording of the temporarily stored dubbed audio stream; (B) producing first and second real play lists respectively adapted to control reproduction of the main A/V stream and the dubbed audio stream, and recording the first and second real play lists on the writable recording medium; and (C) producing a virtual play list including a play item linked to the first real play list, and a sub play item linked to the second real play list, and recording the virtual play list on the writable recording medium.