File:The Tomb of Sargeras audio teaser-YYP96AQO23QF1468952453895.ogg

Summary
Converted to OGG from: https://bnetcmsus-a.akamaihd.net/cms/content_folder_media/yy/YYP96AQO23QF1468952453895.mp3

From page: http://us.battle.net/wow/en/blog/20189511/coming-soon-the-tomb-of-sargeras-7-21-2016