What is the least expensive way to have a remote pedal or device play my tracks during a live show?

I am trying to find an inexpensive way to control my live show when I am not sitting at my keyboard and computer. I can not really afford an appogee Gio. All I want to do is beable to advance to the next track and then play it.

Can I use a usb presentation controller like the Kensington 33062 to advance and play my tracks during a live show? if not what is the least expensive way?

Thanks in advance for any help you guys can offer me.