I bought a NAS RAID disk station (Synology DS411 slim) to serve my music files to the Marantz. Both are connected to the network and I put a bunch of music files in the "music" directory of the diskstation but I get the same thing on the Marantz end: "(Empty)".
The DiskStation has a thing called Audio Station which it says "utilizes AJAX technology to bring you an innovative and enjoyable listening experience. Organize music into playlists, browse your music library, and stream music over the Internet via a web browser become so easy and fun. From now on, you can listen to the music stored on the DiskStation from anywhere by your iPod, Internet radio, and other UPnP/DLNA media servers." But this seems to be more of a music player/streamer than a server.
It also installed a thing called ITunes music server on the diskstation. Should I be using that?
I also have a MacBook on the network but I want the Marantz to get the music files off the DiskStation ideally.