Sources

https://old.reddit.com/r/Minecraft/comments/3zxucv/where_did_the_sound_in_minecraft_come_from/
https://web.archive.org/web/20100830062601/http://minecraft.net/credits.jsp
https://web.archive.org/web/20100124101348/http://www.freesound.org/usersAttribution.php?id=1045860&format=html
https://web.archive.org/web/20100613143900/http://www.freesound.org/usersAttribution.php?id=584268
https://freesound.org/people/C418/downloaded_sounds/?page=7#sound