I tried using the GPO-Sonar tutorial. The first action it lists is to import a MIDI file named GPO-Tutorial.mid. (Direct quote from tutorial--"Locate the file GPO-Tutorial.mid and open it".)
I searched my HD, and could not find such a file. Was it supposed to be installed with GPO? If it is a file created especially for that Sonar-GPO tutorial, shouldn't the author have included a link to download it? Perhaps I missed something, but I haven't seen such a link.
Anyone know where this file exists?