Here is the Spanish locale file

local L = AceLibrary("AceLocale-2.2"):new("FuBar_MoneyDetailFu")

L:RegisterTranslations("esES", function() return {

["Debug Level"] = "Nivel de Debug",
["The amount of debugging messages shown (-1 for nothing at all, 0 for some alert msg, >0 real debugging) !"] = "La cantidad de mensajes de debug mostrados (-1 para todos, 0 para algun msje de alerta, >0 debug real",
["Alliance Auction House"] = "Casa de Subastas de la Alianza",
["Horde Auction House"] = "Casa de Subastas de la Horda",
["Auction successful: (.+)"] = "Subasta conseguida: (.+)",
["Outbid on (.+)"] = "Sobrepuja en (.+)",
["COD Payment: (.+)"] = "Pago de COD: (.+)",
["Allocate All Mail Money"] = "Todo el Dinero de Correo",
["If a matching money amount with mail cant be found, income will be allocated to outbid auctions"] = "Si no se consigue encontrar el dinero por correo, se colocarra en sobrepujas de subasta",
["Incoming"] = "Ganancias",
["Amount"] = "Cantidad",
["Outgoing"] = "Gastos",
["Loot"] = "Saqueo",
["Flights"] = "Vuelos",
["Quests"] = "Misiones",
["Repairs"] = "Reparaciones",
["Selling"] = "Ventas",
["Buying"] = "Compras",
["Outbid Aucts"] = "Sobrepujas en subastas",
["Auction Bids"] = "Pujas en subastas,
["Sold Auctions"] = "Subastas vendidas",
["Auction Costs"] = "Coistes de Subasta",
["Mail Costs"] = "Costes de Correo",
["Inc MMails"] = "Correo Entrante",
["Out MMails"] = "Correo Saliente",
["COD payed"] = "COD pagado",
["COD Payment"] = "PAGA COD",
["Train/Unlearn"] = "Entrenamiento/Olvido de Talentos",
["Total"] = "Total",
["No Data Available"] = "No hay datos disponibles",
["Show All Realms Money"] = "Mostrar todos los reinos",
["Show Money of all realms in tooltip, otherwise just present realm."] = "Mostrar dinero de todos los reinos, sino solo el reino actual",
["Recreate Index Lists"] = "Recrear Listas de Indexaci\195\179n",
["Creates new lists of players / realms you can browse threw."] = "Crea nuevas listas de jugadores / reinos",
["Average"] = "Mejor",

["Merchant"] = "Mercader",
["Mail"] = "Correo",
["AH"] = "CS",
["Taxi"] = "TAXI",
["Trainer"] = "Entrenadores",
["Unlearn"] = "Olvido de Talentos",

["Today"] = "Hoy",
["Summary for : "] = "Sumario para : ",
[" days"] = " dias",
["1 day"] = "1 dia",
[" months"]= " meses",
["1 month"]= " 1 mes",
[" players"]= " jugadores",
["1 player"]= "1 jugador",
["All Years"] = "Todo el A\195\177o",
["All Days"] = "Todos los dias",
["All Months"] = "Todos los meses",
["All Players"] = "Todos los jugadores",
["All Realms"] = "Todos los reinos",

["Player"] = "Jugador",
["Month"] = "Mes",
["Day"] = "Dia",
["Year"] = "A\195\177o",

["January"] = "Enero",
["February"] = "Febrereo",
["March"] = "Marzo",
["April"] = "Abril",
["May"] = "Mayo",
["June"] = "Junio",
["July"] = "Julio",
["August"] = "Agosto",
["September"] = "Septiembre",
["October"] = "Octubre",
["November"] = "Noviembre",
["December"] = "Diciembre",

["AceConsole-Commands"] = { "/MoneyDetailFu", "/mdfu" },
} end)

Wohin bitte entpacken?
Die Dateien liegen lose im Adon Ordner.

Doesn't work for me. If I install it via WoWInterface UI Manager I get an 'internal Error'. After that the files of this addon lie around in WoWs addon-folder without having their own folder. If I create one manually I still get errormessages in WoW.