How to mirror to tv monitor using macbook pro 2012

Howdy there nell a-7,

It sounds like you are not seeing the Airplay icon in the menu bar on your Mac but you do see it in iTunes. I would use these steps from the following article to help troubleshoot the issue:

iOS: Troubleshooting AirPlay and AirPlay Mirroring

http://support.apple.com/kb/TS4215

Try these steps first

• Verify that your iOS device's software is up to date.
• Verify your Apple TV's software is up to date.
• Verify that your iOS device has Wi-Fi turned on. Enable Wi-Fi on your iOS device by going to Settings > Wi-Fi.
• All AirPlay-enabled devices must be connected to the same Wi-Fi network.
  Some Wi-Fi network configurations offer a Guest Network. On your Apple TV, go to Settings > General >Network and ensure that you're connecting to the same Wi-Fi network on your iOS device. On your iOS device, tap Setting > Wi-Fi and confirm that this matches your Apple TV.

If the AirPlay icon doesn't appear

Ensure that you have followed the steps in using AirPlay and AirPlay Mirroring.If you are still unable to see the AirPlay icon , try one of the following steps:

• If trying to AirPlay, or AirPlay mirror, to your Apple TV, ensure that AirPlay is enabled on your Apple TV as well. You can enable or disable AirPlay on Apple TV in the AirPlay menu: Settings > AirPlay.
• Check Internet or network connectivity on all affected devices.

  Some content requires an Internet connection to authorize content playback. AirPlay capabilities may be limited if your network is not connected to the Internet.

• If attempting to use AirPlay from a third-party app or a website from your Safari app on your iOS device, confirm that the app or website is AirPlay compatible (refer to the developers of the app or website for additional information).

Here is some additional information about Airplay for Mac:

About AirPlay Mirroring in OS X

http://support.apple.com/kb/HT5404

Thank you for using Apple Support Communities.

All the best,

Sterling