The volume is a little low to me so, how can I up the volume? in option menu is to maximun

In song selection menu, when the song you need is playing (or pause when playing a score), move cursor to PPD window and scroll up with mouse wheel (it may be scrolled up to 200, but practically maximum is around 120, after that nothing changes). But some scores are not affected by this method, and volume can't be increased, only decreased.

This increase only movie file volume.