Yes, most of the operations can immediately be seen in the live-preview...
besides the effect of motion backgrounds and web-cam live, which i want to demostrate.
For my case, the lyrics and fade-in out can be captured, but the motion backgrounds become a piece of black in captured file.
Nevertheless, thanks for your suggestion!

Hi,
That will be difficult. But why would you? The livescreen doesn't give more info than the preview of Live. So if you use a big screen and size the live-preview up (making the left preview pane smaller) then all the results of all your operations can immediately be seen in the live-preview.
Perhaps not so flashy, but hey, if you really want to see the real live-screen you also have to make fade-in's and fade-out's to switch between operation and live-view.
Hope this helps a little.

Greetz, Ronald.