An optical disk includes: a data region; and a management region. The data
region stores: at least one video object containing video information and
audio information; and at least one audio object containing audio
information. The management region stores first path information and
second path information, the first path information indicating a first
reproduction path including only the at least one video object, and the
second path information indicating a second reproduction path including a
combination of the at least one video object and the at least one audio
object.