To shorten (truncate)MIDIs:
1. Download Anvilstudio MIDI editor (see attached)
2.play MIDI, pause to where you want your midi to begin
3.FILE--->TRUNCATE SONG--->DELETE FROM START TO CURRENT POSITION
4.play track, pause to where you want your midi to end.
5.FILE---->TRUNCATE SONG--->DELETE FROM CURRENT POSITION TO END
6.save new midi.
To optimize ringtone volume/ alleviate ascending ringtone ( by Southern Flower):
1.extend voicemail pickup time to 30 seconds or greater (contact your provider)
2.download a midi editor (anvilstudio)
3.edit ringtone and add a "rest, or two" and trim to 30 secs or more
4.save the ringtone
5.download PSM player (See attached)
6.raise the volume of the edited midi using PSM player.