I'm using the latest updates for Airfoil For Windows, haven't used the
App in a while and I have to say the updated version is a huge leap
forward from the earlier versions I had used, the Interface is far
easier to get around for a start.
Airfoil is an App you can use to stream audio sources from your computer
to an AirPlay device or another computer running Airfoil Speakers.
As well as being able to control Airfoil and the audio from your
computer you can use IOS/Android Controler Apps from mobile devices to
do the job.