I have a LADSPA/DSSI GUI builder going on at http://flam.sourceforge.net/ which is conceived around qt designer. It
is far for complete and I don't think I can dedicate substantial time
to it until the summer. I am also concerned about the need to migrate
The only fully functional part I have managed to finish is flamwizard,
a program that displays a list of the installed LADSPA plugins and
generates a skeleton ui file ready to be edited in qt designer.