How do you do this?

Click here

Click the link above. This is pretty cool how his ad has the ability to let the user select individual file to download. How do you set that up? Can anyone explain this?

There is a VERY old video online that explains the collections feature:

In the POWER ADMIN section, you are able to build NEW products out of files you already have in the catalog, These new files we call "Collections" and are just made up of different single products.

[www.tradebit.com]

is the old video. The concept is still the same!

Ralf