This project is for the online music store [url removed, login to view] and involves replacing all paypal buy now buttons with paypal add to cart buttons.
When clicked the button will add the specific song to the paypal cart.
There should also be a view cart button to see current total.
Upon payment, the person should be redirected to the download area, where purchased songs can be downloaded.
This is all set up already for single song purchases as well as full album purchases. ? However, it needs to be modified to handle mix and matched songs from different albums.
Here is a resource which may help.
[url removed, login to view]