V 2.8.1 library build from USB drive took two boots. Plugged in USB drive after initial boot, Library recognised the audio files and built the library accordingly. However, files could not be played and the Que was empty. Had to reboot the Pi and plug the USB drive again after bootup, then the Queue filled from the USB drived and played the tracks
From @kempster101
V 2.8.1 library build from USB drive took two boots. Plugged in USB drive after initial boot, Library recognised the audio files and built the library accordingly. However, files could not be played and the Que was empty. Had to reboot the Pi and plug the USB drive again after bootup, then the Queue filled from the USB drived and played the tracks