Week 7 adds voiced dialogue in between each song along with mid-song voice lines and animations. I'm guessing they hardcoded these in both PlayState.hx and Dialogue.hx, so I'll need the source code as well.
ninja_muffin99 and the rest of the team have also asked for people to hold off on reposting Week 7, and to play it on Newgrounds in the meantime. They've put a lot of hard work into it so please respect their wishes.