It is easy to have Easy AdSenser in your language. All you have to do is to translate some strings, and email the file to the author.
If you would like to help, please find and edit easy-adsenser.pot under your plugins directory (typically found in /wp-content/plugins/easy-adsenser/lang). Look at the English strings in "msgid" and type in the translations of each in the corresponding "msgstr". That's it!.
Save the POT file .po and email it to me. I will include the translation in the next release.
If you want to translate the popup help texts (such as this one), please consider translating the help*.htm files in /wp-content/plugins/easy-adsenser/lang as well.