--- gen.c	2010-07-02 12:47:55.000000000 +0200
+++ gen.c	2010-07-02 12:43:02.172149666 +0200
 
@@ -320,7 +320,7 @@
 				perror("dup2");
 			close(pipedes[0]); /* close reading pipe end */
 			execlp("sox", "sox", 
-			       "-t", "raw",  "-s", "-w", "-r", srate, "-",
+			       "-t", "raw",  "-s", "-2", "-r", srate, "-",
 			       "-t", type, fname,
 			       NULL);
 			perror("execlp");