elm_object_focus_next_object_set(m->srcbtn, m->group_btn[GROUP_BTN_SONG], ELM_FOCUS_DOWN);
elm_object_focus_next_object_set(m->sortbtn, m->group_btn[GROUP_BTN_SONG], ELM_FOCUS_DOWN);
elm_object_focus_next_object_set(m->srcbtn, m->group_btn[GROUP_BTN_SONG], ELM_FOCUS_DOWN);
elm_object_focus_next_object_set(m->sortbtn, m->group_btn[GROUP_BTN_SONG], ELM_FOCUS_DOWN);