# Filename - Filename question
**URL:** https://community.mp3tag.de/t/filename-filename-question/855
**Category:** General Discussion
**Created:** [February 25, 2004, 11:32pm UTC](https://community.mp3tag.de/t/filename-filename-question/855 "2004-02-25T23:32:35Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Logan](https://community.mp3tag.de/u/Logan)
#### Post date: [February 25, 2004, 11:32pm UTC](https://community.mp3tag.de/t/filename-filename-question/855/1 "2004-02-25T23:32:35Z")
I am in the process of standardizing my MP3 library and have run into the following situation :
I have several files that I am converting to %track% - %artist% - %title% from %track% - %title% - %artist%. What I am running into is that a large number of tracks are remixes and have a section at the end like (BT's Remix).
I have two different conversion set up :
1. %1 - %2 - %3 to %1 - %3 - %2
2. %1 - %2 (%4) - %3 to %1 - %3 - %2 (%4)
If I use conversion 1 on a track without the mix at the end, I get () at then end of the filename.
Is that any way to do this in one pass rather than two ?
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [February 26, 2004, 4:56am UTC](https://community.mp3tag.de/t/filename-filename-question/855/2 "2004-02-26T04:56:57Z")
> [@](#):
>
> Is that any way to do this in one pass rather than two ?
No, this is not possible since Mp3tag has to know the correct filename pattern for the conversion.
Best regards,
~ Florian
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### Author:  [@Logan](https://community.mp3tag.de/u/Logan)
#### Post date: [February 26, 2004, 11:51am UTC](https://community.mp3tag.de/t/filename-filename-question/855/3 "2004-02-26T11:51:40Z")
thanks - incredible application by the way.
I show it to anyone who will listen....
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### Author:  [@dano](https://community.mp3tag.de/u/dano)
#### Post date: [February 26, 2004, 12:50pm UTC](https://community.mp3tag.de/t/filename-filename-question/855/4 "2004-02-26T12:50:20Z")
Logan i think u can do it using a regular expression action on the filename
ive come up with this
Field:
\_FILENAME
Regulare Expression:
^(\d{1,2})\s{1}-\s{1}(._(?._)?)\s{1}-\s{1}(._)(.._)
Replace with:
$1 - $3 - $2$4
maybe u want to try it on some of ur files 🙂
edit:
^(\d{1,2})\s{1}-\s{1}(._)\s{1}-\s{1}(._)(..\*) should work too, no need to catch the ('s
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### Author:  [@Logan](https://community.mp3tag.de/u/Logan)
#### Post date: [March 5, 2004, 2:00am UTC](https://community.mp3tag.de/t/filename-filename-question/855/5 "2004-03-05T02:00:52Z")
d4n0 - you sir, are a rock start !