How do you get the home sharing to work on the 2nd apple tv that I bought. It says that I need to turn on home sharing on my computer. But it is on because my iTunes library shows up on my other apple tv.
If you are attempting to share to both at the same time, you can't.
Are you selecting the second AppleTV in home sharing options on the MBP. Are all devices signed in for Home Sharing with the same AppleID?
You will also find some additional things to check here: Troubleshooting Home Sharing
I have 2 apple tv's and home sharing will only work on one of them. Not both.
