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. 16. 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 album title from the predetermined item; and determining that the information is updated when TOC information is different from that of a matching album title stored in the storage unit.