Minimserver is installed on my NAS. Stuck at next step

[stefano_mbp]

RoPieee on rpi is an option, it’s a great upnp renderer.
You need a upnp control app on your smartphone/tablet too, like Bubbleupnp on Android or MConnect Player on Apple/Android (there are other apps but this is just to start).
The app will read the Minimserver library and let you play to the renderer.
Another option is to install Remote Music Libraries plugin in LMS and enable upnp/DLNA client in its configuration menu, then LMS will be able to read Minimserver library