"An error occurred while opening this media file in the media library. It may be because the file is broken, an unsupported format, protected video content, or for another reason. Try contacting your video provider for a different video format"
The file is a mp3 from a Creative Commons website, file details say it's not a protected content, neither its's broken or unsupported.
To my surprise another mp3 clip - classical music - imported flawlessly.
I'm lost. Help.