I had the problem with miniDLNA on OpenWrt that when playing a directory, the music tracks are sorted alphabetically by name and not by track number. This makes it impossible to listen to operas or concept albums, for example, in the correct order.
The needed option of miniDLNA is
but you can't insert this in the LuCi web interface.
The addition of another line
option force_sort_criteria '+upnp:class,+upnp:originalTrackNumber,+dc:title'
alone is not enough, because it is not supported by the startup-script
The additional option is skipped.
As a hot-fix I added the following line to /etc/init.d/minidlna
minidlna_cfg_addstr "$cfg" force_sort_criteria
deleted the database and restarted minidlna.
I would be grateful if this important configuration option would be added as standard to the 2023 release of OpenWrt/miniDLNA .