Airfoil

Play any audio across your network to a whole host of devices, all in sync! Airfoil sends audio to remote speakers including iOS devices, other computers, and hardware devices like the Apple TV and AirPort Express. Airfoil for Mac gives you any audio, everywhere. Capture from almost any audio source on any device and have it relayed. Want to hear the audio from safari on your iPhone? Done! want to play the music from your iPhone to your mac? Done! Airfoil is your one-stop-shop to getting your audio to where you want it to be.