Title: Ar tonelico 2: Melody of Metafalica （アルトネリコ２ 世界に響く少女たちの創造詩（メタファリカ）） Gender: Game Platform: Playstation 2 Version: US (NTSC) Voice Language: Selectable Japanese/English Text Language: English
NIS didn't dub all the voices in the japanese version, and also removed the japanese voices for those not dubbed dialogs.
There's a version that removes the english voices and puts the whole japanese voices back: http://www.torrentz.com/ad0560f3a926e87d1721a15460e1947dc7e7339a
NIS also introduced a bug that causes a hang in a certain battle. There's a patch here, which works in both nis and undubbed versions: http://asmodean.reverse.net/pages/ar2bugfix.html