unique php script

the script i want should be a social networking script. it's unique features will have : a section for friends to create profiles,customise their profile pages,share videos,music,picture,comments,chat rooms,blogs,forums,etc just like myspace. In the same script have to where an artist such as a music band can create a seperate profile with everything relating to their bands and music,share videos,forums,blogs,etc and also be able to sell their personal cds or mp3s from their personal band storefront they can purchase. also a seperate sign up section to create an invetors profile page and another section for polititions to create a political profile page. Must have news section, polls, forums, video sharing,demecratic,republican or indipendent icons to indicate their party preferences. i can explain more if someone comes close with a script. All must be highly SEO friendly and must see a live demo i can explore