It contains the following fixes
- presets are changed with [ and ] keyboard shortcuts
- preset pages are changed with { and } shortcuts
- window focus is fixed after changing presets with keyboard, so keyboard (AWSEDF..) still can be used for midi preview without any hassle (standalone only)
- mouse scroll is much faster
The shortcuts work only while Zen window is focused and preset changing buttons are visible
Note: your host should have the word "Zen" in Zen window title in order to make the helper work. Can be done with e.g. track renaming or cannot be done at all
Compiled exe (Windows only)
http://db.tt/drO2nN4U
Download and unpack it wherever you like. Run zen_helper.exe manually before each use or autorun it. The program shows like an icon in the tray and will become active when Zen window will be shown. Make sure the icon isn't hidden, as it will usually be by default

Source files
http://db.tt/N5ieQaqe
Can be run with Autohotkey and modified for your taste
