diff -aur mpegaudio.orig/Makefile mpegaudio/Makefile
--- mpegaudio.orig/Makefile	2008-04-03 15:47:34.000000000 +0200
+++ mpegaudio/Makefile	2008-04-03 15:48:14.000000000 +0200
@@ -8,7 +8,8 @@
 PORTNAME=	mpegaudio
 PORTVERSION=	3.9
 CATEGORIES=	audio
-MASTER_SITES=	ftp://ftp.openbsd.org/pub/OpenBSD/distfiles/
+MASTER_SITES=	${MASTER_SITE_OPENBSD}
+MASTER_SITE_SUBDIR=	distfiles
 DISTNAME=	${PORTNAME}
 EXTRACT_SUFX=	.tar.Z