Digital music store

I need customizable digital music store which includes: 1. search panel: - by keywords, genre, mood, instrument, tempo (BPM - beats per minute, 50 or less, 50-70,70-90, 90-110, 110-130,130-150,150-170,170-190, 190 or more e.t.c ) , track length ( less than 15 sec, 15-30, 30 - 1 min, 2 min, 3 min, 4 min, 5 min or more ) in the future I might add vocals e.t.c so I would like to be able to add/remove search options 2. search results: - every track should have : title, lenght, music player ( in order to listen to demo ), description, price, add to cart button, keyword tags, if the track has few versions ( for example 15 sec, 1 min, 2 min ) they should be listed bearing in mind that different versions have different prices, if the track is from the album there should be a link to the album, link to composer profile, - every album should have : cover art, description, all tracks listed with player button, add to cart button, - music player - when someone clicks play button listens to track and than moves to another one, the first one automatically stops playing 3. buying : - when clicking Add to cart the cart updates automatically without leaving the page -all transactions are checked to prevent fraud and spoofing -location of files are hidden and cannot be deduced by casual browsers of the web site -downloads are limited by time and number of attempts -all completed sales are recorded in the database -customer is sent an email with a link to the download area -All pages written in PHP and script is NOT encrypted -Files are not accessible via a normal href link and hence cannot be downloaded by unauthorized users. -Incorporates testing via the PayPal and Google SandBox environment so that the complete system, can be tested. -Interacts with Paypal's IPN system to monitor when a payment is complete for both digital and physical products. -Automatically generates a login in url link for PayPal purchases to download their digital purchases. -discounts, coupons, and free track option 4. I need to be able to modify the look of the shop, template and results in order to fit it into my website so that I can freely add or remove menu items and change the look of the website. 5. control panel for sending e-mail, newsletters, selling statistics, adding tracks, albums, categories, covert arts