Flip 3D lets you cycle through your open windows using a Windows Key + TAB keyboard shortcut. The open windows’ thumbnails are now live updating, meaning if you’ve a video playing in one, it’ll continue to play in 3D interface. As you already know, Windows 7 taskbar lets you pin your frequently used applications; Since Flip 3D is essentially just an app, same can be done with it, too using following steps (Note: Flip 3D will only work if Aero is enabled):

1. Right-click on your desktop, select New, and then select Shortcut
2. Assuming Windows 7 is installed on C: – In location field, type C:\Windows\System32\rundll32.exe dwmapi #105
3. Click Next, and then type Window Switcher for shortcut name, then press Finish
4. Right-click on Window Switcher shortcut that you just created and then click on Properties
5. Click on Change Icon… button
6. In Look for icons in this file field type %SYSTEMROOT%\system32\imageres.dll, and then press Enter
7. Select first icon and then click on OK
8. Click on OK to dismiss properties dialog
9. Drag Window Switcher shortcut from your desktop onto taskbar