The files you refer to are cakewalk .ins files, and they are widely available for many synths. Unfortunately, they aren't the same as an .idf file. Herein lies the biggest problem for me. Each software manufacturer uses his / her own proprietary format for a particular piece of software, so while I've been fortunate to find Motif and PA80 files already available for Sonar, I've had to make new ones up for nearly every other software I have. Jammer pro uses a different format, BIAB still another, N track's sequencer another, etc etc..
I've made entire patch lists for Jammer and BIAB for both of my keyboards, and since I was able to edit them in notepad, things were a little easier. Still it gets tedious. I cut it down a lot in the Style Updater program. I wish there was a standard, such as the way midi is supposed to work. Of course Yamaha has put it's own spin on the midi "standard" by using patch numbers 1-128 for GM as opposed to the standard 0-127.

AJ