Sorry, this file type is not permitted for security reasons

Since the 4.7.1 update I am no longer able to upload podcast files without getting this error. Nothing changed about how we save our audio files. The files are consistently between 5-15 Mb each. I’m able to upload images (jpg, png are ones I tested), PDF files, but audio files, it won’t work.

I’m logged in as the admin, again, nothing has changed with my workflow and how I do things, but now I’m getting this error.

I’ve googled this issue and none of the troubleshooting I have found are relevant to this version of wordpress.