To do that you need to change mando_showplayer.sqf
This is the code that fills up the list
_cfg =(configFile >> "CfgMusic");
_count = count _cfg;
for [{_i = 1},{_i < _count},{_i = _i + 1}] do
{
_cfgi = _cfg select _i;
_index = _list lbAdd (getText (_cfgi >> "Name"));
_list lbSetData [_index, format["%1", configName _cfgi]];
};
you may change it by:
_index = _list lbAdd ("Mi preferred track tittle 1");
_index = _list lbSetData ("Mi preferred track resource name 1");
_index = _list lbAdd ("Mi preferred track tittle 2");
_index = _list lbSetData ("Mi preferred track resource name 2");
_index = _list lbAdd ("Mi preferred track tittle 3");
_index = _list lbSetData ("Mi preferred track resource name 3");
...