These MIDI files have to be played back via Tigercub and a suitable MIDI keyboard like the Miracle keyboard from Mindscape.  The files contain no sound samples so should cause no copyright problems. All tunes are my own compositions and are saved as I played them on the keyboard. That is, using TigerCub I played the tunes on my keyboard and saved them without trying to fiddle with the length and value of the notes afterwards. This was because.....
(1) Perfect tunes don't sound so human when played back.
(2) I didn't want to change them.
(3) Once you start fiddling with a track it soon becomes impossible to     decide on the version you like the most