diff --git a/CMakeLists.txt b/CMakeLists.txt
index 05e68a3..ca3c444 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -50,7 +50,9 @@ set(LOCALIZATION_SOURCES    app/localization/LanguageManager.cpp
                             app/localization/StringIDs.cpp
                             app/localization/English.cpp
                             app/localization/Japanese.cpp
-                            app/localization/German.cpp)
+                            app/localization/German.cpp
+                            app/localization/Spanish.cpp
+                            app/localization/Catalan.cpp)
 
 set(APP_SOURCES app/main.cpp
                 app/MainDlg.cpp
diff --git a/app/localization/Catalan.cpp b/app/localization/Catalan.cpp
new file mode 100644
index 0000000..524cb6e
--- /dev/null
+++ b/app/localization/Catalan.cpp
@@ -0,0 +1,144 @@
+#include "StringIDs.h"
+#include "exception"
+#include "Languages.h"
+
+using namespace std;
+using namespace string_literals;
+
+namespace Localization::Catalan
+{
+	string GetString(int id)
+	{
+		switch (id)
+		{
+		case StringID::OK:
+			return "OK"s;
+
+		case StringID::CANCEL:
+			return "Cancel·lar"s;
+
+		case StringID::CLOSE:
+			return "Tancar"s;
+
+		case StringID::BONJOUR_INSTALL:
+#ifdef _WIN32
+			return R"(<p>Si us plau, instal·la Bonjour per Windows des d'aquest enllaç:</p>
+                      <p><a href="https://support.apple.com/kb/DL999">https://support.apple.com/kb/DL999</a></p>)"s;
+#else
+			return "Si us plau, instal·la el servei avahi-daemon i la llibreria libavahi-compat-libdnssd-dev."s;
+#endif
+		case StringID::TROUBLE_SHOOT_RAOP_SERVICE:
+			return "El servei AirPlay no s'ha pogut iniciar.\nSi us plau, activa el servei Bonjour/Avahi."s;
+
+		case StringID::RECONFIG_RAOP_SERVICE:
+			return "L'emissió d'àudio s'aturarà breument per reconfigurar el programa!"s;
+
+		case StringID::FAILED_TO_START_DACP_BROWSER:
+			return "El navegador DACP no s'ha pogut iniciar. El Control Multimèdia no es troba disponible."s;
+
+		case StringID::MENU_FILE:
+			return "&Fitxer"s;
+
+		case StringID::MENU_QUIT:
+			return "&Sortir"s;
+
+		case StringID::MENU_EDIT:
+			return "E&ditar"s;
+
+		case StringID::MENU_OPTIONS:
+			return "&Opcions..."s;
+
+		case StringID::MENU_HELP:
+			return "A&juda"s;
+
+		case StringID::MENU_ABOUT:
+			return "&Sobre..."s;
+
+		case StringID::LABEL_AIRPORT_NAME:
+			return "Nom Airport"s;
+
+		case StringID::LABEL_AIRPORT_PASSWORD:
+			return "Contrasenya"s;
+
+		case StringID::LABEL_AIRPORT_CHANGE:
+			return "Cambiar..."s;
+
+		case StringID::LABEL_TITLE_INFO:
+			return "Info Pista"s;
+
+		case StringID::TOOLTIP_PREV_TRACK:
+			return "Anterior"s;
+
+		case StringID::TOOLTIP_NEXT_TRACK:
+			return "Següent"s;
+
+		case StringID::TOOLTIP_VOLUME_UP:
+			return "Volum més"s;
+
+		case StringID::TOOLTIP_VOLUME_DOWN:
+			return "Volum menys"s;
+
+		case StringID::TOOLTIP_PLAY_PAUSE:
+			return "Play/Pause"s;
+
+		case StringID::STATUS_READY:
+			return "Tot llest"s;
+
+		case StringID::STATUS_CONNECTED:
+			return "Conectat a "s;
+
+		case StringID::DIALOG_CHANGE_NAME_PASSWORD:
+			return "Canvia el Nom Airport i Contrasenya"s;
+
+		case StringID::DIALOG_ABOUT:
+			return "Sobre"s;
+
+		case StringID::ABOUT_INFO:
+			return CW2AEX(L"\xA9"s) + " Copyright 2025\nFrank Friemel\n\nShairportQt està basat Shairport de James Laird\n "s;
+
+		case StringID::OPTION_MINIMIZED:
+			return "Obrir minimitzat"s;
+
+		case StringID::OPTION_AUTOSTART:
+			return "Autoinici"s;
+
+		case StringID::DIALOG_OPTIONS:
+			return "Opcions Avançades"s;
+
+		case StringID::LABEL_DATA_BUFFER:
+			return "Buffering"s;
+
+		case StringID::LABEL_MIN:
+			return "min"s;
+
+		case StringID::LABEL_MAX:
+			return "max"s;
+
+		case StringID::LABEL_SOUND_DEVICE:
+			return "Dispositiu de So"s;
+
+		case StringID::LABEL_LOG_TO_FILE:
+			return "Guardar registres a fitxer"s;
+
+		case StringID::LABEL_DISABLE_MM_CONTROL:
+			return "Desactivar Controls Multimèdia"s;
+
+		case StringID::LABEL_DEFAULT_DEVICE:
+			return "Dispositiu per defecte del sistema"s;
+
+		case StringID::LABEL_KEEP_STICKY:
+			return "mantenir la finestra sempre visible"s;
+
+		case StringID::LABEL_TRAY_ICON:
+			return "Icona de safata"s;
+
+		case StringID::MENU_SHOW_APP_WINDOW:
+			return "&Obrir"s;
+
+		case StringID::MENU_SHOW_TRACK_INFO_IN_TRAY:
+			return "&Mostra \"Reproduïnt\" a la safata"s;
+
+		}
+		return English::GetString(id);
+	}
+}
diff --git a/app/localization/LanguageManager.cpp b/app/localization/LanguageManager.cpp
index eeb8eb1..173e975 100644
--- a/app/localization/LanguageManager.cpp
+++ b/app/localization/LanguageManager.cpp
@@ -47,6 +47,14 @@ namespace Localization
         {
             return Japanese::GetString(id);
         }
+        else if (m_currentLanguage == "es-es"s)
+        {
+            return Spanish::GetString(id);
+        }
+        else if (m_currentLanguage == "ca-es"s)
+        {
+            return Catalan::GetString(id);
+        }
         return English::GetString(id);
     }
 
@@ -73,6 +81,8 @@ namespace Localization
         list<string> result;
 
         result.push_back("en-EN"s);
+        result.push_back("es-ES"s);
+        result.push_back("ca-ES"s);
         result.push_back("ja-JP"s);
         result.push_back("de-DE"s);
 
diff --git a/app/localization/Languages.h b/app/localization/Languages.h
index ce0c428..a059961 100644
--- a/app/localization/Languages.h
+++ b/app/localization/Languages.h
@@ -17,4 +17,14 @@ namespace Localization
 	{
 		extern std::string GetString(int id);
 	}
-}
\ No newline at end of file
+
+	namespace Spanish
+	{
+		extern std::string GetString(int id);
+	}
+
+	namespace Catalan
+	{
+		extern std::string GetString(int id);
+	}
+}
diff --git a/app/localization/Spanish.cpp b/app/localization/Spanish.cpp
new file mode 100644
index 0000000..8b91276
--- /dev/null
+++ b/app/localization/Spanish.cpp
@@ -0,0 +1,144 @@
+#include "StringIDs.h"
+#include "exception"
+#include "Languages.h"
+
+using namespace std;
+using namespace string_literals;
+
+namespace Localization::Spanish
+{
+	string GetString(int id)
+	{
+		switch (id)
+		{
+		case StringID::OK:
+			return "OK"s;
+
+		case StringID::CANCEL:
+			return "Cancelar"s;
+
+		case StringID::CLOSE:
+			return "Cerrar"s;
+
+		case StringID::BONJOUR_INSTALL:
+#ifdef _WIN32
+			return R"(<p>Por favor, instala Bonjour para Windows desde este enlace:</p>
+                      <p><a href="https://support.apple.com/kb/DL999">https://support.apple.com/kb/DL999</a></p>)"s;
+#else
+			return "Por favor, instala el servicio avahi-daemon y la librería libavahi-compat-libdnssd-dev."s;
+#endif
+		case StringID::TROUBLE_SHOOT_RAOP_SERVICE:
+			return "El servicio AirPlay no se ha podido iniciar.\nPor favor, activa el servicio Bonjour/Avahi."s;
+
+		case StringID::RECONFIG_RAOP_SERVICE:
+			return "La emisión de audio se detendrá en breve para reconfigurar el programa!"s;
+
+		case StringID::FAILED_TO_START_DACP_BROWSER:
+			return "El navegador DACP no se ha podido iniciar. El Control Multimedia no está disponible."s;
+
+		case StringID::MENU_FILE:
+			return "&Archivo"s;
+
+		case StringID::MENU_QUIT:
+			return "&Salir"s;
+
+		case StringID::MENU_EDIT:
+			return "E&ditar"s;
+
+		case StringID::MENU_OPTIONS:
+			return "&Opciones..."s;
+
+		case StringID::MENU_HELP:
+			return "A&yuda"s;
+
+		case StringID::MENU_ABOUT:
+			return "&Acerca de..."s;
+
+		case StringID::LABEL_AIRPORT_NAME:
+			return "Nombre Airport"s;
+
+		case StringID::LABEL_AIRPORT_PASSWORD:
+			return "Contraseña"s;
+
+		case StringID::LABEL_AIRPORT_CHANGE:
+			return "Cambiar..."s;
+
+		case StringID::LABEL_TITLE_INFO:
+			return "Info Pista"s;
+
+		case StringID::TOOLTIP_PREV_TRACK:
+			return "Anterior"s;
+
+		case StringID::TOOLTIP_NEXT_TRACK:
+			return "Siguiente"s;
+
+		case StringID::TOOLTIP_VOLUME_UP:
+			return "Volumen más"s;
+
+		case StringID::TOOLTIP_VOLUME_DOWN:
+			return "Volumen menos"s;
+
+		case StringID::TOOLTIP_PLAY_PAUSE:
+			return "Play/Pause"s;
+
+		case StringID::STATUS_READY:
+			return "Listo"s;
+
+		case StringID::STATUS_CONNECTED:
+			return "Conectado a "s;
+
+		case StringID::DIALOG_CHANGE_NAME_PASSWORD:
+			return "Cambiar Nombre Airport y Contraseña"s;
+
+		case StringID::DIALOG_ABOUT:
+			return "Acerca de"s;
+
+		case StringID::ABOUT_INFO:
+			return CW2AEX(L"\xA9"s) + " Copyright 2025\nFrank Friemel\n\nShairportQt está basado en Shairport de James Laird\n "s;
+
+		case StringID::OPTION_MINIMIZED:
+			return "Iniciar minimizado"s;
+
+		case StringID::OPTION_AUTOSTART:
+			return "Autoinicio"s;
+
+		case StringID::DIALOG_OPTIONS:
+			return "Opciones Avanzadas"s;
+
+		case StringID::LABEL_DATA_BUFFER:
+			return "Buffering"s;
+
+		case StringID::LABEL_MIN:
+			return "min"s;
+
+		case StringID::LABEL_MAX:
+			return "max"s;
+
+		case StringID::LABEL_SOUND_DEVICE:
+			return "Dispositivo de Sonido"s;
+
+		case StringID::LABEL_LOG_TO_FILE:
+			return "Guardar registros en archivo"s;
+
+		case StringID::LABEL_DISABLE_MM_CONTROL:
+			return "Desactivar Controles Multimedia"s;
+
+		case StringID::LABEL_DEFAULT_DEVICE:
+			return "Dispositivo por defecto del sistema"s;
+
+		case StringID::LABEL_KEEP_STICKY:
+			return "mantener la ventana siempre visible"s;
+
+		case StringID::LABEL_TRAY_ICON:
+			return "Icono de bandeja"s;
+
+		case StringID::MENU_SHOW_APP_WINDOW:
+			return "M&ostrar"s;
+
+		case StringID::MENU_SHOW_TRACK_INFO_IN_TRAY:
+			return "&Mostrar \"Reproduciendo\" en la bandeja"s;
+
+		}
+		return English::GetString(id);
+	}
+}