add VORBIS_COMMENT metadata block
diff --git a/src/libFLAC/format.c b/src/libFLAC/format.c
index 060c667..25f7f8d 100644
--- a/src/libFLAC/format.c
+++ b/src/libFLAC/format.c
@@ -106,5 +106,6 @@
 	"STREAMINFO",
 	"PADDING",
 	"APPLICATION",
-	"SEEKTABLE"
+	"SEEKTABLE",
+	"VORBIS_COMMENT"
 };