InfoFork.com

AirPhones is an application which lets you stream audio from your computer to your iPhone or iPod touch. Once you have it set up — which doesn't take long at all — it's as simple as opening the app on your iPhone and hearing your computer's audio through your phone. You can play audio through the built-in speaker, using headphones, or even through a speaker dock if you have one. Simply plug in, open the app, and you're in business.