add FLAC.sln to EXTRA_DIST
diff --git a/Makefile.am b/Makefile.am
index 8ce8467..fe9ca84 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -40,6 +40,7 @@
 	COPYING.LGPL \
 	COPYING.Xiph \
 	FLAC.dsw \
+	FLAC.sln \
 	Makefile.lite \
 	all.dsp \
 	all_dynamic.dsp \