Hi Tony - have you tried transposing the line up an octave or two? Maybe your notation software will handle it better then. Also, if you have access to Band In a Box or Power Tracks, you could import your MIDI file and do the lead sheet fairly easily.
Not sure what you can do about your volume issue as I am not familiar the "Digital Ear" software. Be glad to help if I can...
Good luck!
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Randy
PA4X, SX900 (Baby Genos), Roland U-20, L1 Compact, Way 2 Many Saxes
"My computer beats me routinely at chess - but it's NO MATCH for me at kick boxing!"