Only found 3 times in decompiled scripts. Not a whole lot to go off of.
MISC::_48F069265A0E4BEC(a_0, "Movie_Name_For_This_Player");
MISC::_48F069265A0E4BEC(&a_0._fB, "Ringtone_For_This_Player");
MISC::_48F069265A0E4BEC(&a_0._f1EC4._f12[v_A/*6*/], &v_13); // where v_13 is "MPATMLOGSCRS0" thru "MPATMLOGSCRS15"