# Tag - Filename \[Track Number Code\]
**URL:** https://community.mp3tag.de/t/tag-filename-track-number-code/9262
**Category:** Support
**Created:** [November 4, 2009, 2:48pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262 "2009-11-04T14:48:56Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@thorsonb](https://community.mp3tag.de/u/thorsonb)
#### Post date: [November 4, 2009, 2:48pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/1 "2009-11-04T14:48:56Z")
I recall I used to have an format string as default that came with Mp3Tag, but I deleted, but Now I see it makes my live easier!
I rename all of my album's by this code
```
%album% - %track% - %title%
```
But say for instance the "track" field has the value "1"
it would rename files out as
"%album% - 1 - %title%.mp3"
I want to have the track field have an leading Zero "0" infront of it!
so that it will rename files as
%album% - 01 - %title%.mp3
Code used to be something like this i believe
```
%0,2)track%
```
Thanks in advance
P.s. works good for renaming MP4 files and other Audio files which dont allow you to put "01" in the track number.
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [November 4, 2009, 3:05pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/2 "2009-11-04T15:05:20Z")
It's $num(%track%,2)
---
### Author:  [@i\_edgars](https://community.mp3tag.de/u/i_edgars)
#### Post date: [November 6, 2009, 12:25pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/3 "2009-11-06T12:25:28Z")
But how are I replace track number 001, 002, ..., 010, 011, ..., 100, 101 with 1, 2, ..., 10, 11, ..., 100, 101 in the tag?
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [November 6, 2009, 12:47pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/4 "2009-11-06T12:47:54Z")
To change it in the **tag** :
Make a [new action](https://community.mp3tag.de/t/967/1)
_Action type:_ **Format value**
_Field:_ **TRACK**
_Formatstring:_ **[$num(%track%,1)]**
---
### Author:  [@i\_edgars](https://community.mp3tag.de/u/i_edgars)
#### Post date: [November 6, 2009, 1:13pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/5 "2009-11-06T13:13:32Z")
Thanks, it work!
---
### Author:  [@thorsonb](https://community.mp3tag.de/u/thorsonb)
#### Post date: [November 7, 2009, 12:28am UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/6 "2009-11-07T00:28:59Z")
> [@dano](#):
>
> It's $num(%track%,2)
Thanks a Million!
---
### Author:  [@dikiz](https://community.mp3tag.de/u/dikiz)
#### Post date: [November 10, 2009, 9:03pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/7 "2009-11-10T21:03:09Z")
Actually if I use the action above when I open the folder of an artist (which regroup all releases) I get :
Artist.....Album........Track
AAA......FIRST.........01
AAA......FIRST.........02
AAA......FIRST.........03
AAA......SECOND.....04
AAA......SECOND.....05
AAA......SECOND.....06
AAA......THIRD........07
AAA......THIRD........08
I want that the autonumbering with the "reset counter for each directory" option so I get:
Artist.....Album........Track
AAA......FIRST.........01
AAA......FIRST.........02
AAA......FIRST.........03
AAA......SECOND.....01
AAA......SECOND.....02
AAA......SECOND.....03
AAA......THIRD........01
AAA......THIRD........02
Any idea to get this ? 🙂
---
### Author:  [@thorsonb](https://community.mp3tag.de/u/thorsonb)
#### Post date: [November 11, 2009, 11:44am UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/8 "2009-11-11T11:44:23Z")
> [@dikiz](#):
>
> Actually if I use the action above when I open the folder of an artist (which regroup all releases) I get :
>
> Artist.....Album........Track
> AAA......FIRST.........01
> AAA......FIRST.........02
> AAA......FIRST.........03
> AAA......SECOND.....04
> AAA......SECOND.....05
> AAA......SECOND.....06
> AAA......THIRD........07
> AAA......THIRD........08
>
>
>
> I want that the autonumbering with the "reset counter for each directory" option so I get:
>
>
>
> Artist.....Album........Track
> AAA......FIRST.........01
> AAA......FIRST.........02
> AAA......FIRST.........03
> AAA......SECOND.....01
> AAA......SECOND.....02
> AAA......SECOND.....03
> AAA......THIRD........01
> AAA......THIRD........02
>
>
>
> Any idea to get this ? 🙂
**Good question my friend, I usually go select it album by album and then AutoNumber it..**
**You also need to take in note that the songs are in actually order in which they should be renumbered!**
.
.
.
---
### Author:  [@dikiz](https://community.mp3tag.de/u/dikiz)
#### Post date: [January 5, 2010, 8:52am UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/9 "2010-01-05T08:52:31Z")
Well, to make it simpler, what I'd want is already done by the " **Autonumbering Wizard**" button (with "Reset counter for each directory" option ticked).
I just would like to format the tracknumer tag with an action (so it's part my action group, and I don't forget to do it).
Basically i just need to know what is the RegEx formula of the "Autonumbering Wizard" button ?
---
### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [January 5, 2010, 10:34am UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/10 "2010-01-05T10:34:59Z")
counter resetting is not possible with the actions
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:21pm UTC](https://community.mp3tag.de/t/tag-filename-track-number-code/9262/11 "2026-02-09T12:21:55Z")