Can you please explain in more detail what you are trying to do. Are you trying to capture gestures on items within the FlipView or on the FlipView itself?
It is non-trivial to share gesture handling with the FlipView's ScrollViewer. You need to determine on the first touch if the app will handle the gesture itself or let the ScrollViewer handle it.
See my blog entry Where did all my gestures go? for a discussion of how this sharing works (and doesn't work).
For more complicated gesture handling you may need to disable the FlipView's scroll handling and implement it yourself. On Windows 8.1 you can use the ScrollViewer's new
ChangeView methods to have it animate to the new position.
--Rob