[rhythmbox] [l10n] Update Japanese translation

[Jiro Matsuzawa <jmatsuzawa src gnome org>]

commit eaa7d5b845bcefe1780c6dc3449c010beb85ff52
Author: Akira Tanaka <root 167d36d4acb91 gmail com>
Date:   Thu Mar 14 11:45:36 2013 +0900

    [l10n] Update Japanese translation

 po/ja.po |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/po/ja.po b/po/ja.po
index 0939464..33d6e79 100644
--- a/po/ja.po
+++ b/po/ja.po
@@ -673,7 +673,7 @@ msgstr "プレイリストの保存(_S)..."
 
 #: ../data/ui/playlist-save.ui.h:1
 msgid "By extension"
-msgstr "拡張子順"
+msgstr "拡張子で判断する"
 
 #: ../data/ui/playlist-save.ui.h:2
 msgid "Save Playlist"