[No Longer Maintained] Squeezebox Integration (Logitech Media Server)

I've been trying to get a TTS message to play on a given player while a LMS stream is playing and have that stream pause, play the TTS message and have the LMS stream resume after the message completes.

'haven't been able to figure out how to do it.
The closest I can get is to also install VLCThing on the playe and play the TTS message via that integration. It doesn't pause the LMS stream but the TTS message mixes in with the strram.

Does anyone know if this is possible?