[F] cue files are not read when they don't start with TRACK 01 AUDIO

Another Problem with Cue Files:

Umlaute!

If you write for examle "Ä - Ö - Ü" as Album Performer (ALBUMARTIST) and save it, it is displayed as "Ä - Ö - Ü" in Mp3tag, but written correct in the cue file.
The Problem starts if you save the cue file a second time with Mp3tag, then what was first only displayed is now actually written into the cue file. Furthermore, what is now displayed is "Ä - Ö - Ü".

When you do this a few times more, every saving makes new transformations to the text. It always writes the wrongly displayed umlaute as it is displayed and displays new longer umlaute.

so if you write "Ä - Ö - Ü", it goes like this:
Ä - Ö - Ü (first saving)
Ä - Ö - Ü (second saving)
Ä - Ö - Ü (third saving)
Ä - Ö - Ü (fourth saving)
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