Currently, Auxio "naively" sorts names by doing string comparisons (or with the slightly more intelligent sort), which works well but has the side effect of putting at the end all names with special/foreign characters (eg. japanese, cyrillic, etc).

On the other hand, Jellyfin doesn't have such problem because it uses ICU4N's Transliterator to convert any name to an (easily sortable) ASCII counterpart.

Android provides a subset of ICU4J APIs under the android.icu, notably android.icu.text.Transliterator, which can be instantiated and used to convert names internally. The only caveat is that it's only available since Android 10 (API 29).

I have a half-working prototype on my fork which seemed promising (see attached screenshot), and if you think this feature could be a good addition to Auxio I would absolutely be down to contribute it myself :)