diff -Nru dssi-0.9.orig/examples/trivial_sampler_qt_gui.cpp dssi-0.9/examples/trivial_sampler_qt_gui.cpp
--- dssi-0.9.orig/examples/trivial_sampler_qt_gui.cpp	2005-02-19 18:19:09.000000000 +0100
+++ dssi-0.9/examples/trivial_sampler_qt_gui.cpp	2005-02-19 18:19:36.000000000 +0100
@@ -24,6 +24,7 @@
 #include <iostream>
 #include <unistd.h>
 #include <sndfile.h>
+#include <math.h>
 
 #include "dssi.h"