Can see files in "my music" but nothing in library

Hello all
Total newbie/numpty but love music and Pi set up appeals. I have just flashed Volumio 2 to my SD card and have it set up with Pi 2B, IQ audio dac, Edimax Wi-Fi dongle and powered external hard drive plugged in.
I can find a Volumio hotspot on my networks list and connecting to this gives me the Volumio screen with browse, playback and queue options. When I look in “settings” and go to “my music” I can see 13,000 tracks there but nothing shows at all when I go to “browse” and look at “music library”. Am connecting over wi-fi now but initial power up was with Ethernet plugged in.
Any ideas?