Owning the GF2 you would think I would be able to set this up without problems. With my C1 (custom) setting, it's currently set to Program. How do I switch this to aperture/shutter priority or manual? Also, I see options for beep volume, e-shutter sound (?), and volume in the settings, but no matter what I change it to, I don't hear any sound coming out of my camera. Is this normal? If so, what are those settings actually for?