no sound in header video

Hey! Just downloaded the free version of this theme. Love the features and the fact that I can tweak a lot of things. Just wondering though, I've set a header video by inserting the YouTube url as suggested. However, it doesn't give me an option for hearing the sound on that video... Is there a way to fix that? Also when I pause the video it gives me some suggestions of other videos to watch, but I can't click on them or on any of the other things youtube suggests to click on. Can this be fixed? Here is my website so you know what I mean: thebrinkonline.org Cheers The Brink