Mirror an "Air" via LAN?

Yes. You can use Airplay mirroring on OSX 10.8 to mirror your screen either wired or wirelessly.

You can also only push videos/music as well if you dont want to push the entire screen.

I believe so yes. So far I have not seen any issues with DMCA or the like for mirroring. You shouldn't ever see any since it doesn't pass through HDMI directly, therefore the DMCA violation is never tripped.

Enjoy it! It's my favorite feature of Mountain Lion =]

Pyromonkey83 said:

You can also only push videos/music as well if you dont want to push the entire screen.

Click to expand...

Exactly how? The video part.

If you go through iTunes, you will find a button in the lower right hand corner (looks the same as your iPhone, assuming you have one) for airplay to an Apple TV. I believe Safari also has this functionality built in, as does the iWork suite (Pages, Keynote, Numbers).

There are also apps you can download that will allow you to push anything from any source/window, but I don't know any names of the top of my head.