InsFileChecker is a program to check the consistence of labels of Instrument Definition Files used by the Sequencer Cakewalk/Sonar and PSRUTI.
Instrument Definition Files are used by Cakewalk, Sonar and my MIDI File utility PSRUTI to deliver the names of patches, drums, controllers, RPN and NRPN of synthesizers and keyboards instead of cryptic numbers. The files are textfiles with file extension ".ins". The structure of the files is easy to understand - look for example at "Articles" - "Cakewalk, Voices and Instrument Definitions". In the internet we find instrument definitions for a lot of devices. Most of these are created by users.