Shopping cart for selling downloads

Hi there,

I’m making a music site for someone where we want to sell CD’s and CD Collections, and full album album collection downloads. So far I tried using WP Simple Shopping Cart, and now I’m trying with eShop, but I don’t think either are going to serve my needs. I need the functionality of customers being able to add things to their paypal shopping cart as they browse through the site, which could include any combination of the above.

I’m not sure how to do the following:
1. Have checkout page where they can view their shopping cart and pay for anything and everything they’ve bought. Then,
2. have a download page, where they can download anything and everything they’ve bought. I’m not sure where to put the downloads, and I’m not sure how to code the download page to display only what they’ve purchased.

Help? Thanks.