I can't find one, but have seen at least one instance with an umlaut over the second o, suggesting something more akin to "new-o-politik" to my mind, which would fit somewhat with long o ancient Greek stuff I remember from taking Greek in college long ago and far away.
The group behind that project support the idea that people who use software should have access to the source code of that software, and therefore requesting the "source" is an action they would encourage.
They are also responsible for individual pieces of software with names like "GNU Emacs":
Is one of those words I have almost never heard pronounced. And on the rare occaisions I have, it is by people who are similarly unsure of the correct pronunciation.