reminds me of heavy rain's interface :P
since its a demo :P heres a few suggestions
Try and make the transition between the end and beginning of the video loops end in the exact same spot and it will seem a whole lot smother for the loops.
Transition from when u click were really jumpy D: see if you can smooth those out a bit too :D
Also, clicking the links were kinda hard when they move by really fast D: slow things down just a bit and ur golden :D
Seeing a finished product that runs smooth will be awesome so i'll keep my eyes open ;)