The easiest way of doing this is to use MS Excel, if you don't have excel you can do it in notepad or preferably Notepad++ (or your text editor of choice).
In BRU browse to the folder that contains the files you want to change the name of.
Select all the files you want to rename and from the context menu select "Clipboard copy / Filename + Ext"
Paste the file-names into a text editor then do the same with the folder that contains the files that are already correctly named.
Arrange the text file so it shows this format:
"Old File-name.extension"|"New File-name.extension"
"Old File-name.extension"|"New File-name.extension"
"Old File-name.extension"|"New File-name.extension"
(If there are spaces in the file-names they will need to be surrounded with quotation marks, if there are no spaces it doesn't matter)In BRU browse to the folder that contains the files that you want to rename.
From the Actions menu select "Import Rename-Pairs..."
Select the files and press "Rename".
If you have Excel the easiest way is this:
In Column A type
"Column B paste the old file-names.
Column C type
"Column D type
|Column E type
"Column F past the new files names
column G type
"Column H type
=A1&B1&C1&D1&E1&F1&G1Column H should now look like this:
"Old File-name.extension"|"New File-name.extension"
"Old File-name.extension"|"New File-name.extension"
"Old File-name.extension"|"New File-name.extension"
Now select all the filled cells in column H and copy paste them into a text file.
Save the text file and import it into BRU.