About Airfoil You can send audio from any application to your AirPort Express in just three easy steps. - Select the application whose audio you want to transmit, in the Audio Source area. - Select the desired AirPort Express device from the Remote Speakers list. - Click Transmit. That's it! Once you do this, any audio from the audio source will play out through your remote speakers. Use Airfoil to play audio from RealPlayer, Windows Media Player, Safari, and almost any other application right through your AirPort Express. Give your audio wings, with Airfoil.
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