I know a lot of people don't like the thought of having another PC running for HA but I was going through a lot of the same integration issues with ISY (I love the ISY by the way!)
A few months ago I set up a Homeseer system that integrates with the ISY. This has allowed me to integrate voice (through remote Microsoft Kinects), distributed audio (including TTS) through Sonos, integration of security NVR that includes motion triggers and other events based on the cameras, Hue control, total AV equipment control (they do have Russound plugins).
The system has been running error free since day one.