If you own a compatible Sonos soundbar, you can also use the Sonos app to enable TV Audio Swap. This allows you to transfer the audio from your soundbar to your Ace headphones with the touch of a button. You will need to create a Sonos account to setup the feature, which may be a bummer for data-conscious consumers.
Currently, TV Audio Swap can only be set up using the Sonos app for iOS. Sonos plans to add support for Android devices soon.