My first Songbird extension: Format Column

I use Songbird on my laptop PC. It is very good product for me since it does not need background processes rather than iTunes. But I sometime feel a little inconvenience. I want to see a file type of a media for some reasons, such as ordering library contents, but I can't.

Maybe it is not common for other Songbird users and Songbird team does not add it. But, fortunately, it is a Mozilla based product. I can realize it by making an extension as I do for Thunderbird. So, I've created it. My Songbird becomes more convenient!

If someone needs it too, please feel free to use it. You can download it from the following.
http://hogi.sakura.ne.jp/hiki/?SongbirdExtensions

Please note it just shows a file extension of a media file. So, you cannot recognize whether it is AAC or Apple Lossless since their extension are the same: M4A.