Amendments to ecommerce site (using Wordpress, getshopped and storefront theme)

Hello I would like someone to make tweaks to my live wordpress site ([login to view URL]) that sells downloadable audio using wordpress, storefront theme and wp-ecommerce ([login to view URL]). Please detail your experience in this field when submitting your bid along with any other information. MODIFICATIONS: * Upgrade to the latest versions of wp-ecommerce, goldcart and storefront original * Free (no cost) goods go to the shopping cart, but on checkout the shopping cart avoids payment gateways but it still shows as a transaction. I would also like free goods to bypass the affiliate script so that affiliates aren’t sent erroneous emails saying that they've made commission. * The front page of my site have the same functionality with some modifications : * Same layout (but not background colour) as the storefront original theme as shown on their site [login to view URL] – fading headline banner, scrolling carousel with featured products and 6 categories underneath. I would like these front page categories be picked by me at any time using wordpress. When the user clicks on a category it takes them to a list view of that product category * Create a player that shows on the bottom of the product icon/image in list view (similar to the look on audiojungle but for my site). On clicking on the player it loads and plays a mp3 preview of the product that plays but can also be paused. If the user clicks anywhere else on the image/icon it goes to the page for that product. (Will this need to be developed in HTML 5 rather than flash?) * Can the same icon/image player be used in the description page for the product? * If there is no mp3 preview the player should not appear, just the product icon/image. * Is it possible to have the player on the product images on the scrolling carousel on the front page? * Products icon/image to return in list view in products page as it was moved from the last modification. This will allow the customer to click on the player to preview the product. I would like the name of the product and price to have a bigger font (possibly bold too). * The search bar in list view to have the word "Search" in the box until the user types in it. I would like the product to search from product tags, product description and product title. The results page at the top should display how many results. On the products page and search results, can the "sort" menu have options for "most popular" and "newest" in the category. The default should be "most popular". * I would like the products page to have have an automatic pagination of 10 products per page maximum, so that the user can click on multiple pages if required? * Remove the option for the user to select default and grid view on the products page. * The categories list at the top of the products page… I would like this to be moved to the widgets section on the right so it looks tidier (Only on the products page - no other page). * Full testing on all major platforms for bugs following modifications. FROM THE LAST MODIFICATIONS WHICH NEED TO BE KEPT * The background for the whole site should be in one colour (of my chossing) * A short description showing next to the product name in list view. * The search bar to have an orange background. * The changelog details to be sent to me after final payment so that I know the details for future upgrades.