I just found this in the faq section:

The way our subscription system works is that you have to activate your subscription. This way, people can purchase subscriptions as gifts.

To find your subscription code:
1. It will be in the receipt of your purchase through the DMusic cart. To review this receipt, go to your cart at http://www.dmusic.com/cart/login.php and sign in.
2. Click on "My Account"
3. Under "Overview" you will see your order hilighted. click on the blue "view button." This will take you to your receipt where you will see your activation code.

To activate your subscription:
1. Click "My Dmusic"
2. Click the "settings" tab
3. Scroll to the bottom of the page where it will say "Subscription Info"
4. Enter your subscription code

Is that the info you require? My subscription was given to me, so I've never really seen how it works

TTFN.