You can integrate an Earmix system to your AI setup. It's a bit of workaround & you'll have to add a Series III 16R anyway. As per the manual, your RM32 d-sub direct outs would connect to the line ins of your 16R. The 16R then sends audio to the Earmix network, controls via UC Surface. 16R analog outputs can be used to send audio to floor wedges. See diagram on page 13