CONTENT REPRODUCTION DEVICE, SERVER, CONTENT REPRODUCTION SYSTEM, AND CONTENT REPRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide a content reproduction system convenient for a user.SOLUTION: A content reproduction device 10 of a content reproduction system X is connectable with a network 5. In this case, a content reproduction control unit 100 tries reproduction of a content 125 stored in a local recording medium 12. If the content 125 is based on a non-reproducible format, the reproduction control unit 100 performs downloading or streaming reproduction of an alternative content 325 via the network 5. The alternative content 325 is a file which contains a work identical to the content 125 and is different only in format from the content 125, and has been retrieved by a server using a unique work code 124 created on the basis of tag information 123.