That might just be your device or connection causing some sync issue? I just watched it again to double check and it looks pretty in sync for me. I also know at least a handful of people who've watched it never mentioned that, so I'm pretty sure I didn't done goof when editing it.

That sounds very much like one of my friends though he kept it up for a few years after his college time. Would run around blasting Opeth or The Human Abstract so obnoxiously loud that I'm shocked he didn't get thrown to the gators (He lived in Florida).