Music files not visible to Marantz AV receiver

My marantz AV receiver NR 1504 is meant to be able to play music in NAS files.

It finds the wonky media service but then says it is empty.

I have 250 CDs digitised in apple lossless in the shared music folder but it can’t find them

What do I do?

Hello, unfortunately I have never done this, hopefully another user can provide some information or guidance on how to accomplish this.

I have fixed it.

Needed to rescan / rebuild the wonky media server directories

You most likely need the NAS to allow DLNA streaming which basically lets the Twonky server do its thing). If your My Book Live has this capability, look in the complete user manual for it and search for info about DLNA.
The user manual can be downloaded from WDC.com Support area.