back when I used xubuntu I used gmusicbrowser.
Now, debian 12.5 netinst came with quod libet installed and it can handle 60k files so far.
note that my music collection is stored in 4 different SSD.
If there is anything better than quod libet, what would it be?
I’d imagine mpd with one of many frontends would work well enough. You’d just need to use a dummy music library directory with symlinks to your four music storages for mpd to pick up and catalog everything.
A couple others, if MPD looks appealing, are Navidrome and Mopidy.