--- src/drivers/fluid_jack.c.orig	2014-12-23 09:38:01.047865897 +0100
+++ src/drivers/fluid_jack.c	2014-12-23 09:17:51.620285608 +0100
@@ -268,7 +268,7 @@
 
   fluid_settings_getint (settings, "audio.jack.multi", &multi);
 
-  if (multi)
+  if (!multi)
   {
     /* create the two audio output ports */
     dev->num_output_ports = 1;