Improve my photo/video store (CMS site)

Sorry for my bad english. I have an adult social network in [login to view URL] made with socialengine php (it's a cms like wordpress). I need to edit my store plugin (purchased here [login to view URL]). Using this plugin (already working on my site) members sell their (adult) videos and photos. The store is made for sell downloadable files, but i want something like manyvids.com. So there are some things to improve, because i want that purchased photo/video and free previews can be viewed without download them, so i need to integrate SEAO store plugin with SEAO videos plugin and SEAO photos plugin (for make photos and videos categorized and visible without download). You can copy "Digital contents" code and edit it. 1) actually, in the admin panel of SEAO store plugin, can be checked those type of contents allowed to be created by users: Simple Products Grouped Products Configurable Products Virtual Products Bundled Products Digital contents + I want add "photos" as checkbox + I want add "videos" as checkbox 2) Both, purchased videos and purchased photos must be visible in the site without download them (and if the user want to download them, it must be allowed to do it using concerning buttons on the bought products page). 3) in advanced photo album plugin must be automatically added 2 default categories if SEAO stores/marketplace plugin is installed: albums for sale (photos as preview visible and the other photos protected with a link to the purchase page) and purchased albums. (those 2 category labels must be translatable in the language manager). 4) in advanced video plugin must be automatically added 2 default categories if stores/marketplace plugin is installed: videos for sale (for the previews + link at the purchase) and purchased videos (those 2 category labels must be translatable in the language manager). STORE PLUGIN CUSTOMIZATION: 5) when an user create the product for sales, if he choose "photo": 5a) it can sell up to 30 photos per product, and that 30 must be selected and uploaded all togheter, not one by one, so is automatically generated an album in the SEAO advanced photo album plugin. ------------------------------------------------------ 6) when an user create the product for sales, if he choose "video": 6a) in the same page of the product creation page, must be present the video upload form. 6b) after the video upload, user have to click on "save" button; then must appear a window that ask: "what part of this video do you want to show as preview?" The user have to insert the start time and the end time of the free preview (minimum duration must be 10 seconds). Then, the selected free part selected must be automatically copied in the concerning section and in the browse video page as a video in SEAO advanced video plugin (category: videos for sale). 6c) when an user play a video preview from the browse video page, at the end of the video must appear a floatbox with the link "buy the complete video" (text example) that redirect to the purchase page. 6d) In this page [login to view URL] you can see that the product image is a shopping basket, but i want replace it with the free video preview. 6f) if the seller user choose "video", it can sell only one videos per product ------------------------------- 7) when an user requests a payment, superadmin must be allowed to mark as "paid" the payment ([login to view URL]) even if he used an external payment (cash, wire transfer, etc) 8) now, users cannot request a payment using the comma or the point, i want allow this (3,5€ or 3.5€) 9) when an user past the link of a product in other site/social networks, must appear the video thumbnail of the free preview + title, price and description of the product. 10) all new labels created in this customization must be translatable in the language manager of the admin panel