How do I change the location of Apple Music Library file?

Somehow when I set up Apple Music, I originally pointed the library to the SD card in my iMac.

I really don't want it to be on the Sd card but I can't figure out how to copy the library file to the HDD and then point Apple Music to the new file.

Is this possible?

When I eject the SD card, I keep getting the Music library cannot be saved, The required file cannot be found. I saved the library to my music folder but can't figure out how to point Apple Music to the file.

I did change preferences/ Files - and made the media folder location the Music folder on the HDD, but if remove the sd I keep getting that error.

Thanks in advance for any suggestions.