libavformat.so.55 missing in ffmpeg libs

libavformat.so.55 missing in ffmpeg libs

[Userx Xbw]

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Audacity says it needs "libavformat.so.55" to import FLAC -- I got FFmpeg 
and libavformat install but still no where is libavformat.so.55 to be found.

[userx@voided tmp]$ sudo xbps-query -Rs libavformat
[*] libavformat-2.8.1_1 FFmpeg file format library
[userx@voided tmp]$ sudo xbps-install -Su libavformat
[*] Updating `http://repo.voidlinux.eu/current/x86_64-repodata' ...
Package 'libavformat' is up to date.
[userx@voided tmp]$ sudo find / -name libavformat
/usr/include/avidemux/2.6/libavformat
[userx@voided tmp]$ cd /usr/include/avidemux/2.6
[userx@voided 2.6]$ ls
ADM_coreConfig.cmake  ADM_coreConfig.h  libavcodec  libavformat  libavutil  
libpostproc  libswscale  qt5
[userx@voided 2.6]$

[userx@voided ~]$ sudo find / -name libavformat.so.55
[userx@voided ~]$


How do I get libavformat.so.55 installed so I can import into Audacity? 
Thanks

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