Installing the plugin requires simply unpacking the zip file to the components folder inside your foobar2000 installation directory and restarting the player—the controls should show up immediately by hovering your mouse over the taskbar button or accessing the Jump List with the context menu.
There are also a number of configurable options found in the preferences panel, allowing you to disable certain context menu items or disable Aero Peek when using the thumbnail view. It's a slick addition, and in our testing, works extremely well. The foobar2000 Windows 7 shell integration plugin is a free download for Windows 7 users only. Thanks, Juliana Peña!
Windows 7 Shell Integration [winTense]