Stream BT audio to LMS on RPi3

Hello folks. I have LMS set up on a RPi3 which streams to a number of endpoints, most of which are squeezelite clients on other RPis.

I'd like (for my wife) to be able to stream audio from her phone over bluetooth to the LMS. I've read a few guides which seem to make the idea very complicated, it'd need to be simple to use. Csn anyone point me to a how-to on the topic?

Cheers - and happy Christmas.