mb its a haremheroes vs hentaiheroes thing where the settings haven't been implemented in harem heroes?
cuz' i see it plain and simple in the drop down menu in hentai heroes
click drop down menu and it show
town, profile, harem, adventure, current quest, market, battle, activities, tower of fame, pachinko, forum, affliation, settings, logout

click settings show
change your password, language, sound on/off

click language show
beutsch (beta), english, espanol, francais, italiano (beta)

if u don't see "settings", open the section where u go to change your password, it will prob. have language selection there with sound on/off