# Run MP3Gain from MP3Tag!
**URL:** https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627
**Category:** General Discussion
**Created:** [June 6, 2019, 11:39am UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627 "2019-06-06T11:39:34Z")
**Posts on this page:** 5
**Page:** 2
### Author:  [@Patch](https://community.mp3tag.de/u/Patch)
#### Post date: [July 2, 2019, 6:57pm UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627/22 "2019-07-02T18:57:20Z")
Understood. I’d like to leave the APE information intact, but to write some information in the ID3 tags so that I’ll be able to tell (from ID3 info) that they’ve been through MP3Gain.
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### Author:  [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [July 2, 2019, 7:02pm UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627/23 "2019-07-02T19:02:43Z")
I think the criterion is already there: once the file has got the gain information it has an APE tag.
So you can easily filter for these files with
%\_tag% HAS APE
or for those that still have to be treated with
NOT %\_tag% HAS Ape
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### Author:  [@Patch](https://community.mp3tag.de/u/Patch)
#### Post date: [July 2, 2019, 7:52pm UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627/24 "2019-07-02T19:52:14Z")
That’s an interesting way of doing it. Thanks for the heads up.
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 16, 2019, 5:54am UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627/25 "2019-07-16T05:54:45Z")
7 posts were split to a new topic: [LAME and unwanted ReplayGain fields](https://community.mp3tag.de/t/lame-and-unwanted-replaygain-fields/45919)
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### Author:  [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [July 16, 2019, 5:55am UTC](https://community.mp3tag.de/t/run-mp3gain-from-mp3tag/45627/26 "2019-07-16T05:55:37Z")
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