All production FreeBSD releases: 15.1, 14.5 are supported

Ninja way

 # fetch http://wolfrecorder.com/wrinstaller.sh && sh wrinstaller.sh

Also you can use installer from nightly builds, in case you want to be ahead of the world

 # fetch http://snaps.wolfrecorder.com/wrinstaller_current.sh && sh wrinstaller_current.sh

After reboot you are ready to start using WolfRecorder