Basically, in the software you ship, that license must be somewhere. Often, commercial software ships with an attribution.txt where it lists all the licenses and attributions of open-source libraries it uses. AFAIK that fulfills this license fully (BSD3).
Absolutely it is. You can read the license regarding the terms of binary distribution : https://github.com/p-groarke/wsay/blob/master/license
Basically, in the software you ship, that license must be somewhere. Often, commercial software ships with an
attribution.txt
where it lists all the licenses and attributions of open-source libraries it uses. AFAIK that fulfills this license fully (BSD3).