File Grinder is a program for batch file renaming, copying and moving, based on file name templates and multiple file format meta-tags, e.g. MP3, OGG, FLAC, FictionBook 2, JPEG etc. Renaming files with File Grinder is really easy.
The program also has a console UI, which makes it easy to use it in scripts.

File Grinder Features:
1. File copy, move and rename
2. Generic file name formatting (uppercase, lowercase, counters etc.)
3. Multiple format meta-tags supported (click here for details) * FictionBook 2 * JPEG pictures * Audio files (MP3, OGG, FLAC, WMA, APE, AAC) * Video files (MPEG, AVI) * HTML files
4. Powerful file name template editor
5. Powerful Search & Replace with Regular Expressions support
6. Changes live preview
7. Change or remove invalid characters in file name
8. Command line support

How to use
Step 1. Add the files to the File Grinder using "Add Files", "Add Folder" (1) buttons, or just Drag and Drop them on the file list.
Step 2. Specify the new file name template (2) (in this case we are specifying sub-folders also), you can also use the Template Editor.
Step 3. Choose how to process the files, i.e. move, copy or rename (3).
Step 4. Choose the destination folder (if applicable) (4), and how to treat the existing files (5).
Step 5. When done, click the "Process files" (6) button, the following dialog will popup to overview the processing settings.
This is the last chance to cancel, if everything is fine click "Continue" to start the file processing.

The license of this software is Free, you can free download and free use this file renaming software.