How do I use custom music?

[Whelp]

I don't know where to put it. 

In all seriousness, where exactly does custom music go? I downloaded Sycraft's remastered soundtrack in 16-bit FLAC, and I can't figure out where exactly to put the files.
I'm on Windows 10.

[SupSuper]

If it's not packaged up as a mod, you can just do it yourself by putting all the music files in a mod SOUND folder.
Eg. Documets\OpenXcom\mods\Sycraft_Music\SOUND
Then you can just enable it from the Mods menu.