I’m trying to play music files from my My Cloud Home through my bose soundtouch Wireless spreakers. But the soundtouch can’t detect my WD on the list of NAS player.

I do not have a Bose Soundtouch, but it looks like it requires a DLNA Media Server.

My Cloud Home supports Plex, but the DLNA Media Server is turned off by default.
The answer below explains how to enable Plex and Turn on DLNA

I managed to activate the DLNA server and now I can see my cloud home.Thank you for your help.