with RuneAudio for playing music over my hifi sound system, my files are on a usb device attached to the RaspPi. It would be wonderfull to manage my music library via my (wired) network using a pc. I found a workaround from 2014 in this forum. It was complex, many steps to take. To manage a library (any library) is basic and should be easy. Pls add the feature 
