I recently purchased both the Uniti Nova and a couple Mu-so Qb’s
I’d like to use other audio products around the house to stream from these sources if possible.
My PC (Windows)
Samsung TV (with sound upgrades)
Klipsch PC bluetooth speakers with subwoofer hardwired to above computer
If you attach a hard drive of songs to the nova, and enable server mode, then you will have a upnp source for other devices to stream from.
The nova / qb cannot themselves direct audio elsewhere.
You will need UPnP client software running on these devices. Your TV and computer should have this, not sure about the Klipsch. This will only allow you to play music stored on a USB drive attached directly to your Nova with its server mode enabled.
Multiroom mode is always proprietary, so Naim multiroom will only work between Naim devices. If the other devices support Airplay or Chromecast that gives you more multiroom options.