ADD marketplace functions to a Wordpress Theme with Woocommerce

[login to view URL] this is a current site. This is a site for music producers and dj's to sell and buy tracks. We need some changes done to the template. If you notice the preview of the products is to big we need them to be smaller and to have an audio preview button for each track that plays the track for 1 minute. It also needs to be secure. The tracks cannot be copied in any way by the users. wp-admin cannot be accesed by the users. We also need that new users are able to subscribe to the website. There will be 3 subscription each one with different limitations. Please don't show me work that is not similar to this one. I want to see similar proyect with the same capabilities. I know this can be done fast. The theme is fully working already integrated with woocommerce 2.0 and buddypress. WP-Frontend plugin can be used. the budget for this simple project is $60-80US