Hi,
Zionworx works in a manner which requires you to have a screen in front of you or if you have a sharp eye, it could be as many feet away as you can see the wording on the screen. You can control the songs by using keyboard shortcut but it will be very good if you can see the control screen.
Therefore, remote control is possible, in my opinion, if you have a device that allows you to use the "Enter", "F4", "Page up" and "Page down". I am currently experimenting with a Gyration (US$180) pointer (
http://www.gyration.com/) but I am away from home for so long that I won't be able to tell you anything until March.
Another possible solution is to place your laptop on the pulpit or where ever it should be. The video cable can be extended quite easily.
The above does not gives you a fast solution but just some suggestions. I hope it helps.
God bless,
William