Like the idea. Wanted to do something like this a few years ago. It's an actual pain point: I have thousands of albums, and it's a pain to mix them so that I enjoy them and listen to most of them regularly.

Hate HATE the stock-footage girl on the front page.

What's with "My cart (0)"? I went hunting for the thing that costs money. Is there one?

I assume I can upload my iTunes playlist and you'll fit it to what's in your database, that being the value prop.

I assume your key viral loops are Facebook and Twitter, broadcasting to friends portions of playlists.