Hey. That looks great. How did you mange to make it that pretty? Just one Question: is your Modem really part of VLAN 1? I am running a pretty similar setup and my modem just runs into my USG and terminates my internet connection there (so my public IP is at my USG).
When you go to your sound settings and then playback and then your current speaker: is the volume off the Microphone setting zero or is ihr muted?