I'm a STEM Teacher and Librarian... My class is working on creating interactive paintings using Pi kits, MakeyMakeys, speakers, and original paintings. We are using Scratch for our programming because it is very kid friendly. The students wire the paintings, connect the wires to the wasdfg ports on the MakeyMakey which is connected to the PI kit that has speakers attached to it, as well. The students upload .wav sounds and import them into Scratch, program them to specific keys, and when the conductive wires on the paintings are touched (ground and sound wires), the .wav files play. This works fine.
The problem I am running into is that we need the Scratch program to load immediately when the Pi kit boots up. Six to eight paintings will be on display in a Maker Fair, and we will not have monitors with them to manually load the files from the desktop, so they need to load immediately on booting. Is there a command series that I would use to auto load the Scratch file on booting?