I write music for games, and the part I always dreaded was getting a finished track to actually loop cleanly in the engine: finding the exact loop point, checking the seam by ear, dealing with the reverb tail, and then doing the setup differently for every engine.
Loopsmith is the Windows app I built for that. You load a track, it suggests loop points, you hear the seam repeat before committing, and it exports marked WAVs or OGGs plus ready-to-paste snippets for Unity, Godot, and the web. It can also build the setup inside FMOD Studio or Wwise for you, and it handles adaptive music: stem layers you can fade in and out, and state switchers that crossfade on the bar.
The demo is free and is the full app with five exports, so you can hear one of your own tracks looping in your own project before spending anything.

