diff -ru ZynAddSubFX-2.4.1.old/src/Makefile ZynAddSubFX-2.4.1/src/Makefile
--- ZynAddSubFX-2.4.1.old/src/Makefile	2010-06-27 20:26:52.000000000 +0200
+++ ZynAddSubFX-2.4.1/src/Makefile	2010-06-28 19:56:37.660000001 +0200
@@ -3,7 +3,7 @@
 ifneq ($(MAKECMDGOALS),debug)
-  CXXFLAGS= -O2 -Wall -g -fPIC
+  CXXFLAGS= -O2 -march=i686 -mtune=i686 -Wall -g 
 else 
-  CXXFLAGS= -O2 -Wall -Wpointer-arith -fPIC
+  CXXFLAGS= -O2 -march=i686 -mtune=i686 -Wall -g 
 endif
 
 CXXFLAGS += -DOS_$(OS_PORT) -D$(MIDIIN)MIDIIN -DFFTW_VERSION_$(FFTW_VERSION) -DASM_F2I_$(ASM_F2I) -ggdb
diff -ru ZynAddSubFX-2.4.1.old/src/Makefile.inc ZynAddSubFX-2.4.1/src/Makefile.inc
--- ZynAddSubFX-2.4.1.old/src/Makefile.inc	2010-06-27 20:26:52.000000000 +0200
+++ ZynAddSubFX-2.4.1/src/Makefile.inc	2010-06-28 19:58:38.523000001 +0200
@@ -28,8 +28,8 @@
 #it will try OSS if JACK fails. At runtime you can set the OSS by default by command-line
 #parameters (run 'zynaddsubfx --help' for help) 
 
-#LINUX_AUDIOOUT=OSS_AND_JACK
-LINUX_AUDIOOUT=OSS
+LINUX_AUDIOOUT=OSS_AND_JACK
+#LINUX_AUDIOOUT=OSS
 #LINUX_AUDIOOUT=NONE
 #LINUX_AUDIOOUT=JACK
 #LINUX_AUDIOOUT=JACK_RT     JACK_RT support is broken