Here at White Horse Software, we've just released version 2.15 of MIDIWizard for the GSP-2101. MIDIWizard is a software application that interfaces with a variety of MIDI equipment and runs under any version of Microsoft Windows. Sorry, we don't have a Mac version.
For the GSP-2101, it provides a variety of features not available via the 2101's control panel. You'll find a brief description on eBay - just search for "MIDIWizard GSP-2101".
The major improvement over the previous version of MIDIWizard (version 1.52) is that all on-line help uses current Microsoft technology (HTML windows) and all features of MIDIWizard, including menu options, user input screens, parameter fields and controls have corresponding help. There are over 500 help windows and 120 illustrations.
We also fixed a couple of minor bugs that none of our users found!
If you want more detailed information, you an reach me at me@grahampearson.com.