Can the instrument programming be edited in GPO?
Only if the user is an owner of the full version of Kontakt. GPO instruments can then be loaded into Kontakt and virtually everything in the programming is available for editing. The user can do custom tweaking of parameters, re-assignment of controllers, or complete re-construction of instruments and all results can be saved for future use. Kontakt has other advantages as well: 16 instruments can be loaded per instance and the maximum available polyphony is limited only by the user’s computer power.