It's Age of Empires II including the expansion, but there's more than that.
Included is 1.0c patch, GameRanger, Voobly, ImgBurn if you want to make CDs, WinCDEmu to mount them, and No CD Cracks... all in one torrent.
If you couldn't already figure this out, you unzip the zip file, and burn or mount the .cue files for the ingame music. Of course if you don't want it, turn it off. The no cd crack is for convenience; nobody wants to have pop in a CD when starting their game.