Well, first of all, only three people in Messiah got a voice at all (Paranoid Paradox is something different in that matter), so most of the time, there is only text and BG-music.
But if you don't get any voices at all, go and check in Config. There are the windows 'Screen ' 'Sound' and 'Text'
click on 'Sound' and look for 'Voice' and the 'Character Voice' below, check if the flames are on 'on' or 'off' if they are not 'on' then just change that.
Sorry for any grammatical mistakes, English is not my first language.
Well I hope you enjoy the voices of 'Takuto', 'Kou' and 'Ryouta'. Personally... I love them^^
You may want to read this thread for more info on character voice --> http://aarinfantasy.com/forum/f49/t1...s-messiah.html