I just downloaded the Beginner Series S2 files and quite a few of them seem to be messed up.
I download the lessons manually through the Learning Center. On the page for Beginner Series S2 Lesson 1, the lesson title on the page itself was "Casually Speaking in Korean: My Family is Doing Well" - but when I downloaded the files, the audio file says it's "Mine and Yours", and the dialogue in the .pdf file is completely different to what's in the lesson audio. I find the same problem with lesson 2 and 3, and since several of the other audio files I've downloaded have different titles to what the page itself said, then I'm assuming those are wrong as well.