Much of my current work is bringing the kind of "no excuses" AV transport provided by Firewire into standard IEEE 802 networks (e.g., Ethernet, 802.11 wireless). There's a ton going on, much of it being done by the IEEE 802.1 Audio Video Bridging Task Group, a few transport protocol groups (e.g., IEEE 1722 Audio Video Transport), and recently the AVnu alliance.
Here are a few useful papers/presentations that I have contributed to:
@import((AVB papers/docs))