You can download and purchase Kaze no Hibiki Vol. 5 applied songs from iTunes, amazon music, Mora, and so on, from the following company.
In iTunes, please search for “Kaze no hibiki Vol.5”.
In amazon, search for digital music, “Kaze no hibachi Vol.5”
Please purchase score set in order to practice songs of Vol.5.
For purchasing score set, go to: http://arechinikawa.shop-pro.jp/
Note: Sound quality is as they were applied. Thank you for your understanding.