Auto play powerpoint without clicking open

I am trying to set up the display to show a different powerpoint at lunchtime so I installed Xibo hoping to be able to do this with the schedules etc. However when I add powerpoint to layout and then schedule it, it asks me to open, save or close it on the display, is there anyway to force this to open without someone clicking open with a mouse?

Please have a look at the FAQ on this: