Name: Airfoil Version: 4.9.1 Mac Platform: Intel Includes: Serial OS version: OS X 10.9 or later Processor type(s) & speed: 64-bit processor What's New Version 4.9.1: The Instant On component has been updated to version 8.1.3, improving things for future applications and fixing an extremely rare issue which could cause the OS's coreaudiod to crash. We've also corrected an issue where application icons in the Source menu could be pixelated. A few other minor fixes and improvements have been made. User serial included. Enjoy it! Link for more information: http://www.rogueamoeba.com/airfoil/mac/ Airfoil... Send any audio to AirPort Express units, Apple TVs, and even other Macs and PCs, all in sync! It's your audio — everywhere! With Airfoil you can take audio from any application and send to your AirPort Express units, as well as Apple TVs, and even other Macs and PCs running Airfoil Speakers! Transmit audio from RealPlayer, Windows Media Player, QuickTime Player, and other media players. Send audio from web-based applications like Pandora, Last.fm, and other to the AirPort Express. You can even stream audio from audio devices like RadioSHARK, XM and Sirius radios, around your house.