I don't know how much piracy discussion is permitted on HN, so I'll be brief: this album is contained in the lossless music collection.
Everybody who thinks that copyright is required should see the success of 2hu.
Zun actually does have a semi-formal license/terms of use (it primarily bans commercial use but also quite a bit of other stuff, much of which I think goes ignored): http://touhou.wikia.com/wiki/Touhou_Wiki:Copyrights https://www.animenewsnetwork.com/news/2011-02-14/tohou-proje...
ZUN's blanket ban on commercial distribution makes it really difficult and expensive to legally obtain anything when the only distribution channels are specialized doujin stores -- it's still commercial, but the ones getting the profits are various middlemen and not the arrangers and performers.