I just installed youtube-dl 2021.01.08, the latest as of this post, and downloaded the SoundCloud URL posted above.
$ file Khromata\ -\ Apson\ Psydub\ \(Psydub\ Mix\ DJ\ Set\)-94742888.mp3
Khromata - Apson Psydub (Psydub Mix DJ Set)-94742888.mp3: Audio file with ID3 version 2.2.0, contains:MPEG ADTS, layer III, v1, 320 kbps, 44.1 kHz, Stereo
yeah, youtube-dl download it without problem, but if open link in foobar using FIle->Youtube Source ->Add multiple URLs... error message posted above appears. it plays only if change Youtube source playback quality from best to 128kbps. atleast this is what i get.