Link Cloaking for WPMU

I'm looking for a link cloaking solution for my WPMU installation. I prefer to use this one: it automatically cloaks all the links on your blog.
This one requires some extra code for the .htaccess, and it works only for one blog. If I want to activate the link cloaking for a second blog the htaccess code I have to add messes up the link cloaking for the first blog. I was wondering if someone was able to get a link cloaking plugin which can automatically cloaks links to work on wpmu. Is there for example a global htaccess code I can use to activate link cloaking sitewide?

The Netherlands