Audio preview problem

Trying to upload my first file and I’m getting these messages

Audio Preview is required
Audio Files Included must be set
Audio Preview 'Pop and' was not an acceptable audio format for a preview

My preview is specified, times set, and the file is an mp3.

What am I doing wrong?

The preview has to be a mp3 file, not a zip. That’s your first issue.
“Audio file must be set” means you need to highlight the “audio file” check box (wav, mp3, or both).