Looking for an automatic links plugin – recommendations?

Hey,

so… maybe someone here can help me: I have a book blog and I used a plugin that automatically created links for keywords I created (authors’ names and book titles). The plugin worked really great, it didn’t break other links if the keywords were part of the link title or some such and I could use keywords that contained special characters (I’m German so there are lots of umlauts ä, ö, ü, ß) and also stuff like quotation marks, colons and hyphens.
Then – I don’t now what happened, maybe it was a WP update, maybe a plugin update, maybe it was me using a keyword containing a slash – the plugin broke, links stopped working, even after removing the keywords with special charakters nothing but detached keywords would work – i.e. I always put the book titles in quotation marks but even if the book title was something like “bookxy” the keyword bookxy would not work if there were quotation marks around the title.

Aaanyway, what I am now looking for is a plugin that:
– automatically creates links from keywords I chose (like, I somewhere entered the keyword and the matching url)
– does not break links I created using the WP post or page editor
– works with keywords containing characters besides the latin alphabet

So, anybody got any suggestions? if so, thank you very much 😀