I got Mountain Lion and have no airplay/mirroring button in my toolbar?

None of my iMacs work except for my 2011 model.
I have an '09,10 and '11 and 2-non 2011 MacBooks that don't airplay.
2011 Mac Mini does, 2010 Mini doesn't

mmomega said:

None of my iMacs work except for my 2011 model.
I have an '09,10 and '11 and 2-non 2011 MacBooks that don't airplay.
2011 Mac Mini does, 2010 Mini doesn't

Click to expand...

Mine shows the airplay but doesnt actually let me airplay to my atv.

2011 i5/i7 Macs only for AirPlaying Desktop. Audio works on all models that support Mountain Lion, I believe. I'm AirPlaying audio to my AirPort Express on my 2010 Mac mini without a hitch.

alexreich said:

2011 i5/i7 Macs only for AirPlaying Desktop. Audio works on all models that support Mountain Lion, I believe. I'm AirPlaying audio to my AirPort Express on my 2010 Mac mini without a hitch.

Click to expand...

Anyway around this limitation?

Apple dropped the Display icon in the menu bar with Mountain Lion. They added an AirPlay icon, but it will only appear if you have a Mac that supports AirPlay and it is enabled in Display Preferences.