Roller, try this:
Bring up Launchbar
Type 'runapp', press the right arrow on your keyboard, then use up/down keys to pick a running app.
Press the 'tab' key. This tells Launchbar 'I want to do something with this running application'.
A new menu appears of options of what you can do appears. I can pick 'quit' with the 'return' key.
Try using 'instand send' or drag-and-drop files onto Launchbar.
It's a little odd, but imagine you're constructing sentances in subject-verb order when you use tab. If you instead press 'space', you can run other actions on those applications.