If you want to help translating to other languages, simply download the Languages.properties files, put the right translation for each keyword using any text editor.
Then, send me the translated file, specifying what language you used.  I'll make it available for the next release...

You can send me the file at: patrick.balleux@gmail.com

Get the latest files here:

English/Default: Language.properties
French: Languages_fr.properties
Spanish: Languages_es.properties Languages_es-ar.properties Languages_es-es.properties
Dutch:  Languages_nl.properties
Portuguese: Language_pt-br.properties
Russian: Languages_ru.properties
Italian: Languages_it.properties
Japanese: Languages_ja.properties
Czech: Languages_cs.properties

To see the complete list of all supported languages, click here

Note: Click the download link to get the original file...