For Soundcloud, the file must be in 44.1 Khz (std in audio).
For YouTube, the file must be in 48 Khz or 96 Khz (std in video).

https://support.google.com/youtube/answer/1722171?hl=en&topic=1728573&hlrm=en-GB&ctx=topic#zippy&zippy=

And, of course, nice modular Buddha Machine :)

EDITED Sep 7th 2021, 11:58