SegaXtreme

I downloaded Dracula X and I am using the full versions of magic engine and when I get to the part where I resuce Maria there is no voices and there should be seeing how in the movie sceen they are moving there mouths but all hear is nothing. Now I though the problem was in the iso/mp3 version I downloaded so I found a bin/cue version and I still have the same problem? are burning Pc engine game different from burning sega cd and saturn games?

anyways thanks