Okay, I have struggled with this for a while now. I finally did get it working and I had a router that messed up on me so I went and purchased a new one (Linksys WRT320N). Since I bought the new router, I have been unable to get my apple tv to stream from my computer. I have them both wired, not wireless. It streams from the internet fine, and I'm able to rent movies on it and watch them with no problem. I have tried to turn off pretty much every kind of security on my router in an effort to see if I could get it to stream at all with absolutely no luck. I don't have the firewall enabled on my macbook either, as it was working b4 I bought the new router. Anyone have any ideas? Thanks.