# uniqu song ID

**URL:** https://community.mp3tag.de/t/uniqu-song-id/11546
**Category:** Support
**Created:** [February 6, 2011, 1:34pm UTC](https://community.mp3tag.de/t/uniqu-song-id/11546 "2011-02-06T13:34:20Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![LyricsLover](https://community.mp3tag.de/letter_avatar_proxy/v4/letter/l/c6cbf5/32.png) [@LyricsLover](https://community.mp3tag.de/u/LyricsLover)
#### Post date: [February 6, 2011, 3:19pm UTC](https://community.mp3tag.de/t/uniqu-song-id/11546/2 "2011-02-06T15:19:35Z")

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You could use one of this 3 values:  
%\_crc% .......: CRC32-Wert der Datei  
%\_md5% .......: MD5-Hash der Datei  
%\_md5audio% ..: MD5-Hash des Audio-Teils der Datei

Please have a look:  
[Wie vorgehen um doppelte per %\_md5audio% finden](https://community.mp3tag.de/t/10941/13)

_BTW: Creating an ID from the filename will never ever be unique .-))_

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