I want to do something and not change this as

so good that my name is alfredo andres, I do shop online, I have already performed online stores but not like I asked in this occasion.

I do an online store for music, is that customers can download the cd or sort by shipping.

ie customers to pay their cd available for download, but obviously that can only be paid if you download it ..
otherwise I need to ask if there is any script for e-commerce that has these functions.
or if I can change the opencart to do so, or better still if there is a module.
well thanks for everything hope this issue will help many.

I'm not quite sure what you are asking.
Are you asking does OpenCart support downloadable purchases? YES

i need this info too

IF you need the info then maybe you can explain it better.