--- sound/Makefile.am.orig	2014-06-10 17:24:39.000000000 +0000
+++ sound/Makefile.am
@@ -3,10 +3,9 @@
 SHELL=@SHELL@
 
 install-data-am:
-	$(SHELL) ./../mkinstalldirs $(datadir)/xlogical
-	$(SHELL) ./../mkinstalldirs $(datadir)/xlogical/sound
-	cp *.wav $(datadir)/xlogical/sound
-	chmod 644 $(datadir)/xlogical/sound/*.wav
+	$(SHELL) ./../mkinstalldirs $(DESTDIR)$(datadir)/xlogical
+	$(SHELL) ./../mkinstalldirs $(DESTDIR)$(datadir)/xlogical/sound
+	$(BSD_INSTALL_DATA) *.wav $(DESTDIR)$(datadir)/xlogical/sound
 uninstall:
 	rm -f $(datadir)/xlogical/sound/*.wav
 	rmdir $(datadir)/xlogical/sound