Download Prayer Times PC
Prayer Times PC will automatically organize a schedule for you to know when to pray. It comes with a great variety of cities, villages and counties of every continent, you will be able to locate with its search engine to find the right prayer for the right place. It works in every Windows Operating systems. It has an update wizard to have every existing prayer inside its database.
It supports Athan, Azaan and many others. The program is fully configurable and customizable; you can even configure its options to alert you when you have to say your prayers.
This is a totally free application you should try right now.