Welcome everybody to the new FrostWire forums.
Expect a bit of breakage the following days as we adjust to this new platform.
We thank you for your patience.
Just a couple of points.
6.3.1 does work with Windows XP even though the System Requirements on the following page no longer list it:
And on the FrostWire GUI under Tools, it shows You are up to date with FrostWire v.6.3.0
(even though Help>About shows 6.3.1).
No problems apart from that.