Removed full_duplex.  'audio_on' is now 'record_audio' to match 'play_audio'.  full_duplex is now handled via 'play_audio && record_audio'.
Removed full_duplex.  'audio_on' is now 'record_audio' to match 'play_audio'.  full_duplex is now handled via 'play_audio && record_audio'.

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