CreLoaded Downloads - MP3 Store

I need to combine a regular CRELOADED (OsCommerce) store (using my existant store code) with a downloads controller to enable me to sell MP3 files as direct products. I would need both the front page and admin area. I need the download product to work just like a regular product; add and delete like a product, and display like a product. In addition to the standard OsCommerce-type product description page, i would like to be able to select via a checkbox whether this is a download product, or a physical product. If download, I would like to be able to browse my local drive to select the file that I want to be able to download. Just like there is an option for manufacturer right now, i would like to add one for "Artist". When the "file download" product is being shopped for, when added to cart, i would like it to be purchased just like a regular product, and when the purchase is complete, i would like to generate emails with, and display a unique link that can be used to download the file and track the download. Just like a regular download controller, i want to be able to control how many times the users can download the file. I do want to be able to upload the files as products in the product creation page, but do not want anyone to be able to access them outside of the store. They have to purchase, then recieve a link to the download page and pass in some unique id's, which will in turn provide an option to download the file. This is not a request to write a new site, but simply to modify the downloads controller plugin for osCommerce and integrate it with my existing CRELoaded 6.15 code and make other modifications as appropriate.