You'll find here the source code of the software editor for the preenfm sound module (version 2 & 3).
It's using the great JUCE library.
There are compiled versions for macOS and Windows here.
To start, follow these steps :
If you have any questions or suggestions, please use the preenfm forum. This thread should be the one : http://ixox.fr/forum/index.php?topic=69349.0