Play your iPhone tunes on speakers connected to your Mac with shairport
Remember shairport? No? Ok, here’s a brief description:
This program emulates an AirPort Express for the purpose of streaming music from iTunes and compatible iPods.
You need to a be a little savvy with your Terminal, but it’s quite easy to setup. Although there’s a little problem when Airfoil Speakers is running at the same time.
Turns out there are a couple of developers busily working on making shairport easier to run and config for end users.
So far I found three, which you should use very cautiously in terms of “ease of use”. Xcode ist in all/most cases required.