There is only one action in Mp3tag which can do this:
Action: Replace with regular expression
Field: _FILENAME
Regular expression: .tmp$
Replace matches with: .mp3
This example is a action I have stored which chages .tmp files into .mp3 files.
There is only one action in Mp3tag which can do this:
Action: Replace with regular expression
Field: _FILENAME
Regular expression: .tmp$
Replace matches with: .mp3
This example is a action I have stored which chages .tmp files into .mp3 files.