$NetBSD$

--- SpiralSound/Midi.h.orig	Sun Jun  2 03:28:09 2002
+++ SpiralSound/Midi.h
@@ -24,6 +24,7 @@
 #include <limits.h>
 #include <queue>
 #include <string>
+#include <pthread.h>
 
 #ifndef MIDI
 #define MIDI