Overview
If you, like me, don’t like the new Forgotten Theme, you can easily revert back to the classic clip with a bit of renaming. Go to your AoEHD folder, most likely in C: Program Files (x86), Steam, SteamApps, common, Age2HD. Now navigate to Sound -> Stream. Locate xopen and xopen_x2. xopen_x2 is the new theme, xopen the old. All you need to do is switch the names of the two, and the old theme will play.