django-localeurl and SEO

Hello django friends,

I have installed "django-localeurl" successfully. After some redirecting troubles... don't worry
it works fine, but...

The Problem:
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How is django-localeurl performe concerning SEO?
The "problem" is, if the browsers main language is "en" the sitemap.xml links are created with http://example.com/EN/websitename/foo.html
                             if the browsers main language is "de" the sitemap.xml links are created with http://example.com/DE/websitename/foo.html
                             if the browsers main language is "it" the sitemap.xml links are created with http://example.com/IT/websitename/foo.html
                             if the browsers main language is "fr" the sitemap.xml links are created with http://example.com/FR/websitename/foo.html

Question:
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So it again depends on the google-bot settings (language settings) which urls are sent to google webindex.
Does google know, it should search with different bot settings, to realize that there are multiple languages?

If NOT, than the solution without django-localeurl as we had it before was far better.

Awaiting your professional SEO answers.
Thank you very much for helping me on that topic!
ionic