Hi Honbun,
welcome to this Apple (user-to-user Community!
Re: Import CD track error message:
On my Mac, I choose to keep music from CD's in a separate folder. It is easy to double-click the CD icon on the desktop, and drag and drop a track file (or all track-files on the CD) from the CD to the folder .. it may take a while, and the progress-bar shows how long to go.
For Importing directly to Music Library from the CD:
Here's Apple Support's online article for MacOS 14 Sonoma:
Import songs from CDs into Music on Mac - Apple Support
Eg: gives directions,
eg: "The default encoding format is AAC. To change formats, see Change import settings.."
There is much "how to" information in the linked aticle ... and also trouble-shooting tips underneath.
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Re: :It was fine in iTunes but things are different and I can't find real instructions".
There's a useful resource online: See the "Table of Contents" for topics, leading to detailed "how to" articles.
(NB: For accurate info: You can change MacOS version at the top of articles if you upgrade your MacOS.)
For MacOS 14 Sonoma : Apple Music User Guide for Mac - Apple Support