# Help with ML reorganization
**URL:** https://community.mp3tag.de/t/help-with-ml-reorganization/6472
**Category:** Support
**Created:** [March 18, 2008, 4:22pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472 "2008-03-18T16:22:18Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@MarcoakaP](https://community.mp3tag.de/u/MarcoakaP)
#### Post date: [March 18, 2008, 4:22pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/1 "2008-03-18T16:22:18Z")
Hi all guys, I'd like to reorganize my music library but I'm a real noob when it comes to regexs.
Well, all my mp3s are in a big folder and are properly tagged.
I would like to put them in a directory structure like this:
+% **Album artist** %
.....+% **Album title** % **(published in** % **year** %**)**
..........+if there are more discs -\> **Disc** % **disc** % **of** % **totaldisc** % **,**
\_\_\_\_\_\_\_if there's just one disc -\> _nothing_
\_\_\_\_\_\_\_and in _both_ cases after the two options above (after the comma) -\>
\_\_\_\_\_\_\_ **track** % **track** % **of** % **totaltrack** % **.** % **actualfilenamewithext** %
+% **Composer** %
.....+ **Composed in** % **year** %
..........+% **actualfilenamewithext** %
I hope I've been clear the most. I want to underline that mp3s with %albumartist% do not have %composer% tag and viceversa, I hope this helps.
TIA to everybody willing to spend time for this (at least for me) challenge.
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 18, 2008, 5:28pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/2 "2008-03-18T17:28:57Z")
> [@MarcoakaP](#):
>
> ... Well, all my mp3s are in a big folder and are properly tagged. I would like to put them in a directory structure like this: ...
Your description was helpful, and there are properly tagged files.
So you may try following actiongroup.
1. Choose a subset of your files to play around with and be aware to loose them.
2. Choose a rootfolder where the new tree of files should be created, write it to action #1.
3. Run the actiongroup (note: modify action #3 for test mode).
4. Check if FILENAME\_NEW contains the filepathes you need.
5. If all looks good, then run the actiongroup (note: modify action #3 for reality mode).
6. Ready.
Begin Actiongroup **TEST**
Action #1
_Actiontype 5:_ **Format tag field**
_Field:_ **RF**
_Formatstring:_ **O:\TEST\ROOTFOLDER** _(choose a rootfolder of your own)_
Action #2
_Actiontype 5:_ **Format tag field**
_Field:_ **FILENAME\_NEW**
_Formatstring:_ **$if(%composer%,%rf%\%composer%\%year%\%\_filename\_ext%,$ifgreater(%totaldisc%,1,%rf%\%albumartist%\%albumtitle%÷'('%year%')'\disc÷%disc%÷of÷%totaldisc%','÷track÷%track%÷of÷%totaltrack%.÷%\_filename\_ext%,%rf%\%albumartist%\%albumtitle%÷'('%year%')'\track÷%track%÷of÷%totaltrack%.÷%\_filename\_ext%))**
Action #3
_Actiontype 5:_ **Format tag field**
_Field:_ **\_FILENAME**
_Formatstring:_ **%\_FILENAME%** _(should change nothing while testing)_
Action #3
_Actiontype 5:_ **Format tag field**
_Field:_ **\_FILENAME**
_Formatstring:_ **%FILENAME\_NEW%** _(create new foldertree and move files)_
Action #4
_Actiontype 9:_ **Remove fields**
_Fields to remove (semicolon separated):_ **RF;FILENAME\_NEW**
Note: Replace one special character ÷ with one space character.
End Actiongroup **TEST** (4 Actions)
Good luck!
DD.20080318.1928.CET
---
### Author:  [@MarcoakaP](https://community.mp3tag.de/u/MarcoakaP)
#### Post date: [March 19, 2008, 1:54pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/3 "2008-03-19T13:54:17Z")
Ok, you look pro with regexs, but I'm a user who wants to understand what he does and the more I play with the more problem rise.
Well the first problem comes from track numbers, the way you decribed produces results like xxy in the filename from xx/y looking tags. Then the discnumber doesn't show in case of multicd album.
I played a little and discovered that I can do the work even from the tag-\>filename panel, and digging in the forum I discovered several interesting formatting inputs.
%band%\%album% '('%year%')'$validate(%track%, of ). %\_filename%
A good base for my job, but it lacks the condition band vs composer, the discnumber condition, plus I'd want it to show two-digit track numbers. Here's what I'm trying to obtain:
Normal music has the %band% field, so
%band%\%album% '('%year%')'\ ***something for discnumber with the validate thing for removing the slash** \*$validate(%track%, of ). %\_filename%
Example: "The Who\Quadrophenia (1973)\Disc 1 of 2, track 01 of 10. The Who - I Am the Sea.mp3"
Classical music has the %composer% field, so
%composer%\Composed in %year\%\_filename%
That's easier, I just need to merge it with the above one.
---
### Author:  [@DetlevD](https://community.mp3tag.de/u/DetlevD)
#### Post date: [March 19, 2008, 2:21pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/4 "2008-03-19T14:21:10Z")
> [@MarcoakaP](#):
>
> Ok, you look pro with regexs, ...
There was no regexp involved, this was just plain use of your given tagfield names and two functions $if() and $ifgreater() and your given logic.
I know that the TRACK tag field can be formatted as 'n' (track) or somewhat like 'nn/nn' (track/totaltracks) (so DISCNUMBER too), but you've said that you have properly filled tags on which you have referred going along with your description.
And I thought you are familiar with Mp3tag and tagging in general, so you should know that a DISCNUMBER tag field is a user field, that you have to fill in with proper values (so far as I know).
> [@MarcoakaP](#):
>
> ... Disc 1 of 2, track 01 of 10. The Who - I Am the Sea.mp3" ...
Avoid such filenames, I do not think that they are sortable in correct order.
You may play around with the following actiongroup.
Begin Actiongroup **TEST**
Action #1
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_RF**
_Formatstring:_ **O:\TEST\ROOTFOLDER**
Action #2
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_T**
_Formatstring:_ **$regexp(%track%,0\*(\d+)/0\*(\d+),$1)**
Action #3
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_TT**
_Formatstring:_ **$regexp(%track%,0\*(\d+)/0\*(\d+),$2)**
Action #4
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_D**
_Formatstring:_ **$regexp(%discnumber%,0\*(\d+)/0\*(\d+),$1)**
Action #5
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_DT**
_Formatstring:_ **$regexp(%discnumber%,0\*(\d+)/0\*(\d+),$2)**
Action #6
_Actiontype 5:_ **Format tag field**
_Field:_ **TMP\_FN**
_Formatstring:_ **$if(%composer%,%TMP\_RF%\%composer%\%year%\%_filename\_ext%,$ifgreater(%TMP\_DT%,1,%TMP\_RF%\%artist%\%album%÷'('%year%')'\D.%TMP\_DT%.%TMP\_D%'_'T.%TMP\_TT%.%TMP\_T%'\_'%_filename\_ext%,%TMP\_RF%\%artist%\%album%÷'('%year%')'\T.%TMP\_TT%.%TMP\_T%'_'%\_filename\_ext%))**
Action #7
_Actiontype 5:_ **Format tag field**
_Field:_ **\_FILENAME**
_Formatstring:_ **%TMP\_FN%**
Action #8
_Actiontype 9:_ **Remove fields**
_Fields to remove (semicolon separated):_ **TMP\_RF;TMP\_T;TMP\_TT;TMP\_D;TMP\_DT;TMP\_FN**
Note: Replace one special character ÷ with one space character.
End Actiongroup **TEST** (8 Actions)
DD.20080319.1621.CET
---
### Author:  [@MarcoakaP](https://community.mp3tag.de/u/MarcoakaP)
#### Post date: [March 19, 2008, 2:44pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/5 "2008-03-19T14:44:24Z")
Oh yeah, now I've understood the logic behind that all! Works perfectly now, thanks!
---
### Author:  [@MarcoakaP](https://community.mp3tag.de/u/MarcoakaP)
#### Post date: [March 19, 2008, 3:27pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/6 "2008-03-19T15:27:50Z")
A simpler solution (since classical music mp3s are less I can select'em by myself):
%band%$validate(%album%,-) (%year%)[\Disco [$num(%discnumber%,1)]][$num(%track%,2)]. %\_filename%
%composer%\%year%\%\_filename%
---
### Author:  [@system](https://community.mp3tag.de/u/system)
#### Post date: [February 9, 2026, 12:20pm UTC](https://community.mp3tag.de/t/help-with-ml-reorganization/6472/7 "2026-02-09T12:20:50Z")