I’m having the exact same issue, and it’s genuinely annoying because I uploaded all these audios legitimately after the big audio update.
These audios work fine in-game but in studio it just fills up my output with way too many errors. Looks like a roblox-side bug which we’re just going to have to hope some staff will accidentally find a post talking about this and raise the issue.
Leveling up to regular still on hold for around 1-2 years now, so don’t go telling me to just “post a bug report”