This is the Drama CD sample uploaded to Dengeki Bunko’s youtube channel advertising the release of the special edition 10th volume of Seishun Buta Yarou on 2020/02/07 here: Here
The other anime BD/DVD ones are all on MPT’s channel here: Here
Hopefully this doesn’t get taken down, and maybe if I can get my hands on the full CD I might translate the rest too.
Or just go ask MPT. Discord link from his videos: Here