Overwrite the original empires.exe and/or empiresx.exe files (you can make a back-up first, not required). Unpack the zip and copy/paste the empires.exe or empiresx.exe in your default Age of Empires directory, usually located at C:\Program Files (x86)\Microsoft Games\Age of Empires. zip file has the following versions of Age of Empires/The Rise of Rome Expansion: Age of Empires Legacy Soundtrack (remaster)(2nd Edition).The Christian Story, Part 1 (Scenarios 1-5 of 11).Definitive Edition: Multi Player Scenarios.Definitive Edition: Single Player Scenarios.
