12. A voice recognition dictionary generation method according to claim 10 , wherein the external device is a digital audio device or a mobile phone, and the medium is a CD or a DVD.
12. A voice recognition dictionary generation method according to claim 10 , wherein the external device is a digital audio device or a mobile phone, and the medium is a CD or a DVD. 13. A voice recognition dictionary generation method according to claim 12 , wherein, in the case where the medium is a CD, determining whether the information in the file of the predetermined item is updated includes: extracting an artist name from the predetermined item; determining whether the artist name is stored in the storage unit; and determining that the information is updated when there is no identical artist name.