The .NET and XNA frameworks are required to play FE7x.
If you don't have them you can download them here:
.NET Framework 4
XNA Framework Redistributable 4.0
OpenAL is used for audio playback ingame, and can be installed by running oalinst.exe, which is provided in the download.
FE7x is not a rom hack.
You do not need an emulator to play it.
If you are using a Windows operating system and have installed the dependencies listed above,
just extract the files from the archive and run the FE7x.exe executable file.
Version 0.5.1.4 - Part One Uther (Feb 22, 2016)
Version 0.3.2.2 - Trial Map Final: Download (rar) - (zip)
Version 0.2.1.0 - Trial Map 2: Download (rar) - (zip)
Version 0.1.0.0 - Initial XNA release with Trial Map 1: Download (rar) - (zip)
The Mono framework is required to play FE7x on Mac.
If you don't have it you can download it here:
The current release reportedly only works with Mono 4.2.2
Version 0.5.1.4 - Part One Uther