vintagevibe
Beepster
So I guess since you have it using USB you are switching soundcard drivers to check your mixes?
No. You don't have to use the VRM drivers. I just send an out from my main interface (Echo Audiofire 8Pre) into the VRM so I don't even use the VRM as an audio interface - just an FX box. You can do it either way though.
Actually this is a pretty good idea, that way you have the box running all of the time instead of having to change the audio preferences. You just throw on the headphones to check the audio you want and then can immediatly go back to listening to your speakers.
I feed a hardware rackmount tuner the same way. I'll be setting this up tonight!
As far as room measurement microphone goes, yes the ARC comes with one, but I think any decent omni mic will work fine.