Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/mime/audio/x-pn-audibleaudio.xml

 <?xml version="1.0" encoding="utf-8"?>
<mime-type xmlns="http://www.freedesktop.org/standards/shared-mime-info" type="audio/x-pn-audibleaudio">
  <!--Created automatically by update-mime-database. DO NOT EDIT!-->
  <comment>Audible.Com audio</comment>
  <glob pattern="*.aa"/>
  <glob pattern="*.aax"/>
  <alias type="audio/vnd.audible"/>
  <alias type="audio/vnd.audible.aax"/>
</mime-type>