Stream music from Iphone to home theatre receiver?

I'm looking for an add-on component that will allow me to stream music stored on an Iphone or Ipad to a home theatre receiver. Please don't recommend a new receiver, not an option right now. Links to the item you recommend appriciated.

Logitech Wireless Speaker Adapter for Bluetooth Audio Devices

Now you can listen to all the music, movies and games on your iPhone, iPad or Android phone the way they were meant to be heard-in full, detailed sound through your home speakers. Just plug this sleek little adapter into your powered speakers or home theater system. It's that easy to turn your speakers into a wireless sound system for your Bluetooth-enabled smartphone or tablet.

http://www.amazon.com/...004VM1T5S/

Apple Airport Express will do it. It is $99 new and less when refurbished.

Apple airport express or Apple TV