Ok, this is what happened:
I formatted my mp3 player -it forced me to do it.
I lost a few files.

I found that there was a file that i lost and i paid for it online.
If i go to my online banking statement, i can still find the transaction.

It provides me with an online transaction of the payment.

Can anybody tell me how i can use this transaction to get my product back or download it again?

There stand the parties name and then a few numbers and "clickbank"before it.
Isn't it why you have a receipt? To prove that you paid?
Should i contact the author and copy the receipt?
Or what should i do to get the product back, can you type your number somewhere in clickbank and will they give you the link again?