I used Sonos ... but my iTunes library is stored on a separate HD - a Samsung SSD. Mainly because there is too much to go on the Mac book’s HD.
the Samsung is plugged directly into the MacBook. Sonos allows me to add to the library , and one of the selections is external HD attached to the computer.
but when I select this, it keeps on coming back with a ‘no can do’ message ...
any ideas?