Hello,
I searched the help document (http://ajaxuploader.com/document/) to change the language of the messages. I found in the FAQ it can be done via an external XML-file:
All labels, buttons, tooltips and messages are located in external XML files, so that the language of the Uploader can be switched with a single property. You can also create a new language in a matter of minutes.
Unfortunatly, I didn't find in the document more information about this. Where can I find this XML-file?