Is it possible to correct obvious wrong book titles?

examples:
www.listal.com/viewproduct/books/3137358
title: "Richtig schöne Muskeln"

www.listal.com/viewproduct/books/3137360
title: "Selbstversorgung aus dem Garten"

www.listal.com/viewproduct/books/3137348
title: "Nachlass eines Massenmörders"
author: "Serdar Somuncu"

Mmmm... i think i have to add a new database entry with the correct data... am i right?!?

No, that would just create a new, seperate entry. It would be correct, but now there would be (more or less) duplicate entries for the same item. The ability to edit entries (at least custom entries), has been something a lot of us have been jonesing for; Tom's aware of this desire (I'm pretty sure), but there are likely several significant technical issues that need to be sorted out before we see it.

I will run a script soon that will update all products from amazon, that should correct the problem.

I want to add edit product pretty soon, it's a pretty major feature that yet to be done.