You can always use a HDMI switcher with Toslink connections to a receiver for home use. I'm not so sure that you couldn't use portable USB speakers for added sound as well.
I received an email from a tech rep confirming compatibility with the VP3D1, he said he physically hooked one up himself and varified 3D functionality.
For some reason, I'm still a lil skeptical and would love to see end-user comfirmation.
I'd like to add that each time I've called the Viewsonic reps, once I got thru the automated directory protocal, the phone was answered promptly and you couldn't ask for nicer more helpful people. Each email was promptly answered as well.
I'd still like to see more user reviews about noise, focus, CA, screen sizes, etc.. as well as some pics posted, before I buy. Any 3D reviews would be a plus as well.