Stream to LMS?

Hi,

Can anyone help me sort out how to stream from my (Xubuntu 18.04) laptop apps to LMS on the RPi, please?

As a complete novice to this type of thing I managed to get LMS up and running to 'power' my synced Raspberry Pi system using Moode & IQaudio

Despite what it says in the link, now I only use LMS installed on a RPi with the music on an external hard disk

What I have never worked out, is how to stream music from my Laptop to the LMS RPi (and hence out to the Moode RPi's)
Mostly I use the RPi LMS to play the music, but sometimes I'd like to use other apps on my Laptop

I worked out how to use pulseaudio-dlna to stream to individual Moode RPi's but I want to use the synchronisation of LMS

Hope that makes sense!

Thanks

Leigh