Thank you for your quick help, Bruce! Changing the browser language setting indeed works. However, I can see that becoming a problem when viewing other sites (which I may actually want to read in German), and having to switch browser settings all the time really isn't particularly comfortable, so I have to say I still believe that a selection menu or something along those lines would be helpful. I know I've seen language choice buttons on some of your pages (although I can't find an example right now) where I could have changed from English to Spanish or (I think) Chinese... Maybe I dreamt that though.
Anyway, your reply solves the immediate issue, and if the lack of choice is not intentional on your part, then I suppose that eases my general concerns as well.