Encoding issue in Metadata for .sid file

The umlaut and the u are displayed as a weird char for a .sid audio file.

A screen shot: http://imgur.com/GApx5

And here is the .sid file to try it on: http://hvsc.etv.cx/?info=please&path=C64Music/MUSICIANS/M/Mueller_Markus/Coco_Intro.sid

Tools -> Media Information -> Artist, shows it wrong too.