I'd like to add something about the above and "Play to" media files... You don't need an Xbox, just a DLNA device, which includes most newer "smart TV's", some Blue-Ray players and AV head units. The confusion lies with manufacturers use other names for DLNA. Example: Samsung calls it "AllShare™".
If your device has network capability (Wi-Fi, ethernet), set it up. Then try the above to see if it's available to 'play to'.
I had a couple of friends over the other night and we were watching movies, talking, etc. One of them mentioned a YouTube vid that they thought was funny and wanted to share it with everyone (they did have an iPad and was trying to find it again) . I grabbed my RT, did a quick search, found it, and then sent it to my TV for everyone to watch. Let's just say everyone was blown away.
The iPad owner was pissed!!! He thought the only way to do this type of thing was to get the Apply TV, and use Airplay. I had to explain to him that Apple's Airplay is proprietary version of DLNA and that if he had a "Smart TV" it's most likely DLNA compliant (which he does have, but didn't want to buy Apple TV). With that he made me show him around my Surface RT and all it's features, split screen apps, Office, remote desktop, etc. (everyone else watched also). In the end, he was asking everyone in the room if they wanted to buy his iPad, because he was going to get Windows tablet. Of course no one took him up on the offer.
I got a note last night that he sold his iPad, and picked up a Surface, and got everything working with his TV and stuff and was extremely happy. Now hes asking about my Windows Phone, as he's never liked his iPhone very much, and hates Google/Android even more.
Which reminds me, I really should send him the above vids just to give more info than what I gave him