This following 9 steps are no more necessary, since
Old answer:
This seems the only replacement you have to do.
Please ensure, that Mp3tag is closed before you follow these steps.
You can try it with the freeware editor Notepad++.
-
Open your text list (with all your composers for example) in Notepad++
-
Open the search & replace box in Notepad++ with CTRL + H and
Enter\r\nas "find what" and\u000bas "replace with" text -
Ensure that the selected search mode is "Extended"
-
Click on the button Replace all
The text should look similar to this (VT instead of CRLF):
(if you don't see the "invisible" VT or CRLF characters, click on the "Show All Characters" button
in the toolbar
)
Close the search & replace box
-
Copy this entire text from the first to the last character into the clipboard with CTRL + C
-
Open the Mp3tag configuration file
%appdata%\Mp3tag\data\usrfields.iniin Notepad++ too -
Search the tag panel field with the
value=where you want to add all this entries to the drop down box. For example the manually in Mp3tag added COMPOSER field (the #number may vary!):

-
Paste the entire content from 5. after
custom_values=with CTRL + V -
Save the configuration file
%appdata%\Mp3tag\data\usrfields.ini
Now open Mp3tag and have look if all your new added entries appears in the drop-down box of your selected tag panel field.

