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airplay ... yes
airplay mirroring ... no

Anything playing in iTunes, can be sent to an aTV.

for mirroring the newer macs have hardware to handle the re-encoding of the video. to not completely overdrive your processor while streaming.

there is airparrot, but people's reviews on here have been all over the place.from greatest thing ever, to horrible, video stutters, computer fans kick on full speed.
 
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