digital delivery

[wonshikee]

Hello, i am developing a site for digital delivery.

Are there any common mistakes I should be aware of?

(Just the actual delivery of the digital file)

Thanks for your time.

The main question I have is how to handle the following:

The mp3s will be stored on the client's local server, the website will be remote.

When someone purchases - they will be provided a link, which I would like it to be done through the website. ie:

http://www.domain.com/download.php?id=123

Then download.php will validate the request - but this is where i'm not sure how to handle - how do I correctly access the mp3 (given I know where the mp3 is via http URL).

Is it better to download the file to the website - then handle it to the user (which seems like double work and could have problems) - or is there a way to from this point allow the user to get the file and still hide where the real file location is.