I was using mp3tag with great success to edit asf/wma files tags up until I upgraded to the latest version (2.33f).
I tried editing tags in Russian, and now only Artist and Album shows correctly. Other fields are displayed in wrong codepage.
I guess, this is all started after Unicode support was implemented - I was using 2.28c before and it was fine.
I also tried to use "Taglist-file - Tag" conversion and got the same problem plus it writes tag and complains that it can not open file for writing for each file.
If I click yes and refresh view once it is done, I see files tagged correctly... (except codepage problem, of cause).
Any way it can be fixed? I had to roll back to older version...
As for "Can not open file for writing" problem - this happens only first time mp3tag tries to write tag to each particular file. That may be something with those files and is not a really big problem...