VLC 2.2.4 on El Capitan   View > Show Audio Effects >    http://donmontalvo.com/vlc/001.png http://donmontalvo.com/vlc/002.png

TuneShell gives you a nifty web interface to upload FLAC files, just turn on Wi-Fi within the app and it give you IP Address and Port number.     Creating folders is a little bit of a PITA though, have to do it through the device...I reached out to the developer.   I have a growing number...