I have had Fios TV for a week and Internet and phone for a month.
First let me say that I am very happy, I do not have HD TVs, but each of my 3 TVs has a Stereo attached, two with Surround Sound. At present I can stream from a network PC only to the TV in the family room where the DVR is located. I would like to Stream Music and Video to at least one other location with a STB. Is that possible or do I need to get more, or different equipment.
You have a Home Media Dvr if you're able to use the Media Manager.
Unfortunately it will only work with that DVR.
Even if you get a second DVR, only one DVR at a time can be used as a "hub" to use the Media Manager application

sorry to dissapoint on the Verizon end.
lucky for you there are plenty of third party devices that can do just that. check out the link i'm providing http:/reviews.cnet.com/home-video-reviews/?filter=1105350_111869_ (http://http:/reviews.cnet.com/home-video-reviews/?filter=1105350_111869_)