diff -ru vocoder.old/src/Makefile vocoder/src/Makefile
--- vocoder.old/src/Makefile	2007-11-26 00:12:00.000000000 +0100
+++ vocoder/src/Makefile	2009-09-02 15:13:05.005122238 +0200
@@ -1,5 +1,5 @@
 # Settings #fold00
-CPPFLAGS= -O2 -Wall -W
+CPPFLAGS= -O2 -march=i686 -mtune=i686 -Wall -W
 CPPFLAGS+= $(shell fltk-config --cflags)
 LFLAGS= -ljack -lm
 LFLAGS+= $(shell fltk-config --ldflags) 
diff -ru vocoder.old/util/Makefile vocoder/util/Makefile
--- vocoder.old/util/Makefile	2007-09-02 00:42:00.000000000 +0200
+++ vocoder/util/Makefile	2009-09-02 15:14:15.546881596 +0200
@@ -1,5 +1,5 @@
 CC=g++
-CFLAGS= -ljack -lsndfile
+CFLAGS= -O2 -march=i686 -mtune=i686 -ljack -lsndfile
 
 all:	play_loop