Extra considerations:
See
https://data.musical-artifacts.com/99kits/licenses/ for licensing and attribution details.
All drumkits (naming schemes, GM-ification, Hydrogenization, and so on, are Creative Commons CC-SA. See
http://creativecommons.org/licenses/by-sa/3.0/deed.en_US for more information.
If you believe there has been infringement, contact Klaatu. Also, go find a hobby.