Stream to soundbar

I have an LG soundbar that supports casting media over the network (Chromecast, Airplay, etc.).
the LG soundbar integration only supports volume control and source selection
I would like to stream media to the soundbar from home-assistant
Is it possible to use the current integration, or is it a “feature request”?

Does it show up as a chomecast device if you have that integration? That would be the obvious way.

I don;t believe there’s a play_media option for airplay devices - but I could be wrong. There is, however, for chromecast compatible devices.