Its one of the more complicated shows to set up. Best to look at and modify a copy of the example.
Have a look at the pp_radiobuttonshow_1p2 example. Run it and see what it does. Then open a copy of the profile in the editor.
By editing the radiobuttonshow you will see a Links tab. This associates symbolic names to track-references of tracks in the medialist. Change the tracks in the medialist to videos making sure the replacements have a track reference that is in the Links.
You may also need to edit gpio.cfg using Leafpad as this associates the physical buttons with symbolic names.
Pi Presents - A toolkit to produce multi-media interactive display applications for museums, visitor centres, and more
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