Digital downloads on Marketpress


I’ve been trying to find info in the forums regarding the use of your marketpress plugin for selling digital downloads. Here’s what I need.

I have 11 MP3’s that can be purchased individually, or as a complete bundle, or you can buy 6 of the eleven for a discount. I need a plugin that provides the purchaser access to the MP3’s they purchase. Our customers generally purchase 3-4 MP3’s then come back and buy more. Can Marketpress be used to keep track of what MP3’s each customer has purchased and allow them access to those downloads only?

I know I can use levels in the membership plugin but I don’t see how this would work if a customer returns to buy more MP3’s. If Marketpress can manage this that would be awesome.