CNN Pipeline has discountinued.
You shouldn't have any problem downloading http:// .flv videos from edition.cnn.com with
WM Recorder.
As for live RTMP streaming videos at edition.cnn.com, although you can try to record them with
RTMP Flash stream recorders like
Replay Media Catcher or
Jaksta, it might be better to use
screen video capture software like
WM Capture instead.