I am connecting devices wireless to my beamer via a Chromecast (HDMI). The beamer is hanging at the ceiling.

The sound now comes out of the beamer.

The beamer has a line out connection so I can connect my beamer to the headphone jack of my play 5, but then of course I need a cable from my beamer to my play:5.

Of course this is not an acceptable solution. Hanging the play:5 at the ceiling isn't an option as well.

Splitting video and sound from my device results in synchronisation issues + I would still need a cable from my device to Sonos.

So what alternatives do I have to connect my beamer to Sonos?

Isn't there a small device that only has a headphone jack and the ability to connect to the sonos network?