Failed to upload to the cloud

#1

I drag and drop music files to VOX uploader and get this message for some files-
the file has a supported extension but has an incorrect signature, try to convert it to another audio format. It seems to be with.wav or flac files? what does this mean?

#2

Analyze the problem files with MediaInfo using tree or text view.

It may be that the wav or flac file format contains unfriendly audio (like unsigned PCM audio) or a codec that VOX doesn’t like.