I am trying to determine if Zen Cart can accomplish what I need.

I should start off by saying that I've created a couple of stores with Zen Cart, with much success. This new project, however, is a little more involved...

I need to create an MP3 store, where I can have multiple songs and albums by multiple artists for sale. These songs need to be browse-able by a handful of different methods - artist, song length, tempo, meter, etc... I need these to be displayed neatly in a list, with the ability to preview and buy the song directly from the product list.

I'm fairly confident that this can be accomplished. What I'm not too sure about is this:
I also need there to be an "artist area", where each artist can log in and track their sales, and ONLY their sales. Is this possible in Zen Cart? Is it possible to customize the back-end to display certain sales data for different users?

An idea of what I'm looking to do can be found at www.asimplesound.com (although you won't be able to see this artist area here)

I'm just trying to get an idea if all this is possible before I start working, otherwise it could be a black hole of trying to figure things out...