> Create .mp3 ? In your original post, you said it was an mp3. Can you
> please clarify what happened?
*Why* iTunes imported it this time, I cannot explain. I do not understand.
I always down-convert my speech audio files (such as this one) by choosing
Advanced > Create mp3 file (which, since the file is already an mp3, creates
a new file using the parameters I specify in Preferences).
So once the file was successfully imported, I tested its validity by doing
the conversion on it and the resulting (smaller) file is also valid.
All's well that ends well.