I have a Denon AVR-X3200W as part of a control4 system

One of my inputs is a Hikvision NVR (security cameras), since there is no audio I thought it would be nice to listen to the radio while I watch cameras so I hooked up an internet radio feed to the analog input 5 (and coax input 1) I then went to input assign and next to the HDMI input I added the analog input for the digital radio.

When I turned on the NVR I got no audio.

So for giggles I removed the HDMI 3 from the input assign and BAM! Audio can be clearly heard, I also set the CD input to coax 1 and yes I could also hear audio.

However, whenever I tried to add the HDMI to the input Assign the audio stops on both inputs...I'm at a loss, I'm going to check if there's an option in the NVR for audio over HDMI but I assumed the Denon managed this. Could someone shed some light on the situation?

UPDATE: NVR had audio disabled by default, so I enabled it for no good reason. It doesn't work. But I had the audio playing on the input and I could hear it in the theatre, as soon as I plugged in the HDMI cable it stopped... wheres the pounding my head against the wall emoticon?