--- lletters-0.1.95+gtk2.orig/wav_play.c
+++ lletters-0.1.95+gtk2/wav_play.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <fcntl.h>
+#include <stdlib.h>
 #ifdef GSM
 #	include <gsm.h>
 #endif
@@ -113,7 +114,7 @@
 		fprintf(stderr,"Cannot initialize DSP\n");
 #ifdef SOUND
 		exit(0);
-#endif
+#endif 
 	}
 	
 	report();