Freesound Forums

this channel appears to be using freesound to inflate the amount of content they have.

https://www.youtube.com/channel/UCpslTmq6lPNhol4kCKV8riA

They've sort-of attributed, e.g. ...
https://www.youtube.com/channel/UCpslTmq6lPNhol4kCKV8riA/search?query=Timbre
but in my case neglected to mention the license is non-commercial use, (not "No copyright").

yea. they are giving credit but mine are also non commercial. I do not care if someone uses my stuff in a video. these are not videos though. this person is posting hundreds of videos a day with no effort put in at all.