You must possess a legally backed-up ISO or WBFS file of your own game disc. When locating the file for the Spanish experience, ensure the filename or region code indicates "PAL" or "Europe". In Dolphin, you can right-click the game in your library and select "Properties" to verify the region. If the language does not automatically set to Spanish, you can force it in the configuration menu under the Wii tab by setting the System Language to "Spanish".

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