Colin,
Are you sure about your KN1500 Rcordings being lost forever? Do they not play on your 7000?
True the 7000 may substitute a different rhythm and sound, but your original song is there for you to tweek if neceassary.
Therefore, I believe your quote "cannot be re-produced in any way, shape, or form " may not be correct.
Larry
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Larry "Hawk"
Hawk Music Sadly No More
♫ 🎹🎹 ♫ SX-900