# \[X\] Weird values for ITUNNORM field at M4A files

**URL:** https://community.mp3tag.de/t/x-weird-values-for-itunnorm-field-at-m4a-files/7853
**Category:** No Bugs
**Created:** [January 28, 2009, 4:59pm UTC](https://community.mp3tag.de/t/x-weird-values-for-itunnorm-field-at-m4a-files/7853 "2009-01-28T16:59:20Z")
**Posts on this page:** 3
**Page:** 2

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [April 13, 2009, 6:27am UTC](https://community.mp3tag.de/t/x-weird-values-for-itunnorm-field-at-m4a-files/7853/21 "2009-04-13T06:27:14Z")

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> [@RichieB](#):
>
> Since mp3tag is not available for Linux, I thought it might be good to post it here.

It's not available _natively_ but works fine under Wine. Anyway, thanks for sharing!

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### Author: ![chrizoo](https://community.mp3tag.de/user_avatar/community.mp3tag.de/chrizoo/32/233_2.png) [@chrizoo](https://community.mp3tag.de/u/chrizoo)
#### Post date: [May 17, 2010, 9:50am UTC](https://community.mp3tag.de/t/x-weird-values-for-itunnorm-field-at-m4a-files/7853/22 "2010-05-17T09:50:46Z")

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> [@Moonbase](#):
>
> \*\* = Probably another place to hide the »listenability index«, a complex algorithm that factors in a wide range of values to determine if your songs have »maximum listenability«. This is to insure that certain songs get played more often than others. Apple secretly kowtowing to corporate interests and their desire to control our listening habits. Maybe we should find out how to set a value that prefers _our_ songs instead. (Suggestion: Make it an optional second parameter in _$rg2sc()_.)

very unlikely. I rather think the value is something like an audio footprint of the music, by which the user can tell iTunes to play similar songs (to the current one).

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [December 28, 2018, 2:24pm UTC](https://community.mp3tag.de/t/x-weird-values-for-itunnorm-field-at-m4a-files/7853/23 "2018-12-28T14:24:50Z")

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