I really don't know how you would explain it, because I don't understand what your product is. Whatever your explanation is, it needs to be clear and concise, e.g. "Juwo is the easiest way to organize and share your recordings."
The location of the diagrams on your website is the least of its problems - it is almost irrelevant. I would suggest first getting rid of about 90+% of the text on your frontpage.
The new design is a huge improvement, but (and I know this is harsh) only because the old one was so poor. There are still a lot of problems with the page. Right now your homepage looks like (well, it IS) a manual. It needs to look like a brochure. Put your manual somewhere else.
Paul Graham's suggestion to take a look at wufoo.com is a great one. That's one of the best homepages you can find on the net. Simplify simplify simplify and reduce reduce reduce.
The location of the diagrams on your website is the least of its problems - it is almost irrelevant. I would suggest first getting rid of about 90+% of the text on your frontpage.