I've done a couple test purchases for one cent, but neither time did I get either an email with a download link or a return link to a download page from PayPal.
Also, the Sales Report page says there have not been any sales yet.
I'm using the free version and have set this up for a client, so I don't have direct access to his PayPal account, in case something needs to be changed there.
I have gotten the receipt email from PayPal and my client has gotten the payment received email from PayPal.
The music store is here: http://lowelljameshicks.com/music/
Thanks for your help.