Three *.tar file archives contain all the files needed:
The first file, XYZ.tar, when expanded (using tar -xvf), generates two sub-directories (XY and Z) within a directory called XYZ. These two sub-directories contain the files Arduino_XY.ino and Arduino_Z.ino respectively. The other two files, open_scope.tar and open_stage.tar, when expanded generate a directory for each of the two GUI applications. To produce OpenStage and OpenScope, just extract the directories open_stage.tar and open_scope.tar. To compile the code (assuming all dependencies are installed) type Make from each of the expanded two subdirectories Stage_code and Scope_code.