In the Hotkeys Settings I changed the keys for "louder"/"lower voice" in my german VLC "lauter"/"leiser" from the default keys [up] and [down] to [mouse wheel up] and [mouse wheel down], so it's like in winamp.
Problem is, since I cahnged that, I only can change volume in fullscreen mode. When vlc is not in fullscreen, but of course the windows is the focus, it does not work. This is stupid, because in order to change volume, I have to go to fullscreen-mode (or use the GUI-Slider).
I am not talking about Global Hotkeys, it should just work in Not-Fullscreen-Mode, too. Like the keys for pause, forward, etc.