Locale Emulator only helps to run the game and display the texts correctly but this game doesn't need it. I'm using textractor too but can't hook the texts at all so still looking for H code.
By problem do you mean only OP movie has no sound? Since I find it's strange that other than the OP movie the sound works fine. For me there is only 1 option Realtek High Definition Audio in the starting config menu. Should I try to update this one?
Just checked and there was only 1 option to choose. Do I need to install something special? This is my first time picking up Ensemble title so I don't know much about them.