Capitalize FLAC.

tools/cuetag.sh

@@ -138,7 +138,7 @@ main()
 	for file in $@; do
 		case $file in
 		*.[Ff][Ll][Aa][Cc])
-			echo "Flac tagging not supported."
+			echo "FLAC tagging not supported."
 			;;
 		*.[Oo][Gg][Gg])
 			vorbis $trackno "$file"