Thanks — good question about publishing an audio track to only one participant. Short answer: LiveKit does not support publishing a track as a one-to-one/unicast directly (a published track is available to the room). What you can do instead: • Use subscription controls to simulate one-to-one delivery: ◦ Connect participants with

autoSubscribe

disabled so they don't automatically receive published tracks. ◦ Then programmatically subscribe only the intended participant to the publisher's audio track (server-side

updateSubscriptions

or client-side

setSubscribed(true)

for that participant). • You can also set track subscription permissions on the publisher so only allowed participants can subscribe. If you'd like, tell me: • whether you prefer a server-side or client-side approach, and • which SDK (JS, Android, iOS, or server SDK) you’re using, and I’ll provide the exact code snippet for implementing the selective subscription. Sources: Subscribing to tracks | LiveKit docs | Camera & microphone | LiveKit docs