What's weirder is that as I typed the above paragraph, I decided to stop and see if I unmuted the speakers, would the sound also play through the earbuds. When I went to unmute the sound, I noticed that my controls were back to their old look. Not only that, but my earbuds are working again.
I swear... I think my computer is playing a mean April Fool's joke on me. (Given that I'm a geek who spent the previous six years in my old firm doing I/T work, it wouldn't surprise me if I had computer gremlins to annoy me on April Fool's Day!) %-)