It looks good, kinda masculine. There's nothing really feminine about the site. This may be a plus if most of your audience is predominantly male.
The varying volumne levels made the audio kind of alarming, when transitioning from one page to another.
Help expressions are very informative.
Content could be more professional if written from a different point of view. I was a bit confused about what the company does exactly.
Overall, the site is appealing using both visually and audio effects, as well as useful and informative.