The Kindle apps are hard coded to use only the default monolingual dictionaries.
If you want to use a different Spanish dictionary, you'll need to:
- delete the monolingual Spanish dictionary (B005F12G7O_EBOK.azw), if present
- change the ASIN number of your dictionary to B005F12G7O
(You can change the ASIN number with
Java Mobi Metadata Editor)