This action uses regular expressions when replacing strings in the specified Field.

Regular expressions is a formal language that is used to find strings or parts of strings that match a specific pattern. This pattern is defined by Regular expression and matches are replaced by the given replacement string defined under Replace matches with.

Please note that matches can be referenced.

If case-sensitive comparison is enabled, Mp3tag replaces Original only if it is matched using the same upper and lower case.

Special Fields

• _TAG covers all tag fields
• _FILENAME denotes the file name of the file including its extension
• _DIRECTORY denotes the parent directory of the file
• _ALL contains both _TAG and _FILENAME (not _DIRECTORY)