Only in rakarrack-0.6.1/src: config.h
diff -ru rakarrack-0.6.1/src/global.h rakarrack-0.6.1.flinclude/src/global.h
--- rakarrack-0.6.1/src/global.h	2010-10-01 03:44:53.000000000 +0200
+++ rakarrack-0.6.1.flinclude/src/global.h	2012-04-09 10:52:58.000000000 +0200
@@ -99,7 +99,7 @@
 #include <X11/xpm.h>
 #include <jack/jack.h>
 #include <jack/midiport.h>
-#include <Fl/Fl_Preferences.H>
+#include <FL/Fl_Preferences.H>
 #include "FPreset.h"
 #include "Reverb.h"
 #include "Chorus.h"
diff -ru rakarrack-0.6.1/src/process.C rakarrack-0.6.1.flinclude/src/process.C
--- rakarrack-0.6.1/src/process.C	2010-10-01 03:45:12.000000000 +0200
+++ rakarrack-0.6.1.flinclude/src/process.C	2012-04-09 10:52:56.000000000 +0200
@@ -28,7 +28,7 @@
 #include <fcntl.h>
 #include <sys/types.h>
 #include <unistd.h>
-#include <Fl/Fl_Preferences.H>
+#include <FL/Fl_Preferences.H>
 #include "global.h"
 
 int Pexitprogram, preset;

.