Copying music files to a new MyCloud?

My MyCloud NAS could fail and I’d lose 650 music CDs.
How can I copy what it contains to a new device?

I did not load the CDs onto the NAS myself. That was done by a firm called :murfie”, which exists no more.

When I access the NAS through the WD site, I see a folder named “alac”. When opened, I see a list of all the performers on the music CDs.

I have very little technical knowledge. Any simple instructions for making a duplicate?

@Alltrack

User Manual: My Cloud Home and My Cloud Home Duo (westerndigital.com)