How Long Do I Get to Keep My Subscription Songs?
You may keep your subscription music for as long as your Yahoo! Music Unlimited subscription is active. You will need to update the licenses every 30 days. This is done automatically as long as you are connected to the Internet. On occasion, you may need to update the licenses manually; if so, you will see a dialogue box with instructions.
If your subscription lapses, or you cancel it, your subscription music will not be playable. You may always re-subscribe to Yahoo! Music Unlimited, and in that case, your music would become active and playable again.
Burnable, purchased downloads you buy individually do not expire if your Y! Music Unlimited subscription ends. These are yours to play and enjoy without subscription time limits (note that burnable, purchased downloads have a playlist burn limit of 7).