Audio Not recognized in sharable chat

Hello I am having an issue with uploading an m4a to my meeting transcriber(copied from yours). Both your and my "app" work in the settings window, next to the prompt and inputs selections but when I use the shared link I get the following error. When I look at the error preview in devtools i see this

400 Invalid extension m4a. Supported formats: "c", "cpp", "css", "csv", "doc", "docx", "gif", "go", "html", "java", "jpeg", "jpg", "js", "json", "md", "pdf", "php", "pkl", "png", "pptx", "py", "rb", "tar", "tex", "ts", "txt", "webp", "xlsx", "xml", "zip"

[9:03 AM]

Seems like no audio or video are allowed on this end but somehow in the ¿app builder window? those filetypes are allowed.