You love Window phone because of surprising easy-to-use interface and an advanced mobile phone OS from Microsoft. Now it just got better with its new recent update of 7.5 Mango. Microsoft said it has added more than 500 new features to its new update but what is the advantage since you are not able to set ringtone from your Zune Music Library in Windows Phone 7 and now with Windows Phone 7.5 you can set your custom ringtone but not from your Zune Music Library ringtones will be added to your ‘ringtones+sounds’ section in your settings.