# Adding "Composer" changes file duration

**URL:** https://community.mp3tag.de/t/adding-composer-changes-file-duration/62320
**Category:** Support
**Created:** [October 7, 2023, 2:40pm UTC](https://community.mp3tag.de/t/adding-composer-changes-file-duration/62320 "2023-10-07T14:40:30Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![ohrenkino](https://community.mp3tag.de/user_avatar/community.mp3tag.de/ohrenkino/32/4843_2.png) [@ohrenkino](https://community.mp3tag.de/u/ohrenkino)
#### Post date: [October 7, 2023, 3:12pm UTC](https://community.mp3tag.de/t/adding-composer-changes-file-duration/62320/3 "2023-10-07T15:12:35Z")

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> [@twsf](#):
>
> These files were very badly modified by MP3Tag and no longer play properly

I think that MP3tag is only the messenger that the files were corrupted prior to tagging.  
Here are some links for tools to check the files:

> [@How to check files for errors?](https://community.mp3tag.de/t/how-to-check-files-for-errors/44633):
>
> It’s required and often helps to reduce support cycles to check files for errors before filing a bug report. Symptoms of erroneous files are often missing or wrong bitrate or length audible blips or skips tags seem to be sticky and cannot be removed There are some really good tools to check the files for errors, namely MP3 Diags — identifies many different issues in MP3 files Website: [http://mp3diags.sourceforge.net](http://mp3diags.sourceforge.net) Download: [MP3 Diags - Getting MP3 Diags](http://mp3diags.sourceforge.net/010_getting_the_program.html#binWindows) If the font size in MP3 Diags is …

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