--- a/RelaxNG/publidoc.rnc	jeu. mai 31 13:51:49 2012 +0200
+++ b/RelaxNG/publidoc.rnc	jeu. mai 31 14:00:37 2012 +0200
@@ -330,7 +330,7 @@
 audio.attributes =
    media.id.attribute
  & audio.type?
-audio.type = attribute type { "music" | "voice" | "backgound" | "smil" }
+audio.type = attribute type { "music" | "voice" | "background" | "smil" }
 
 # ~~~~~~ tooltip