FS1REditorFx is a parameter editor for the Yamaha FS1R. It doesn't have MIDI thru, you have to use your sequencer.
It is still in beta status so be aware that some problems can happen.

Version: 0.11.2

This software is freeware from Denis Queffeulou (@denmakesmusic). You are authorized to use it, to distribute it as long at it remains not modified. You are not authorized to sell it.