Fix for FreeBSD

I forgot to include this file with my changes the other day

audio/vorbis/vorbis.go

@@ -7,9 +7,11 @@
 package vorbis
 
 // #cgo darwin   CFLAGS:  -DGO_DARWIN  -I/usr/include/vorbis -I/usr/local/include/vorbis
+// #cgo freebsd  CFLAGS:  -DGO_FREEBSD -I/usr/local/include/vorbis
 // #cgo linux    CFLAGS:  -DGO_LINUX   -I/usr/include/vorbis
 // #cgo windows  CFLAGS:  -DGO_WINDOWS -I${SRCDIR}/../windows/libvorbis-1.3.5/include/vorbis -I${SRCDIR}/../windows/libogg-1.3.3/include
 // #cgo darwin   LDFLAGS: -L/usr/lib -L/usr/local/lib -lvorbis
+// #cgo freebsd  LDFLAGS: -L/usr/local/lib -lvorbis
 // #cgo linux    LDFLAGS: -lvorbis
 // #cgo windows  LDFLAGS: -L${SRCDIR}/../windows/bin -llibvorbis
 // #include "codec.h"