I was using the VG-ripper earlier this year but don't need it anymore. I think this is a standalone software as I cannot find it in Control Panel > Uninstall a program (Windows 7). How do I uninstall it? The only trace is the icon in the task bar.
Try using Revo Uninstaller. Even if it can't uninstall the application normally, it will force it to uninstall by wiping out all traces of its presence from the system.
After that, try running AdwCleaner to make sure that there are no leftover rogue registry keys or toolbars in your system.