Stream iTunes

Have an iMac in one room and a good distance away in another room I have an Onkyo AV Receiver with speakers and TV and TiVo. Have found a few radio stations that I like and am trying to figure out how I can get them from my mac to the sound setup. I have my TiVo running wirelessly with a Netgear router. Don`t want to create problems with TiVo operation because we really use it a lot but would like to run the iTunes radio through the Onkyo receiver,have done a lot of reading but it only confuses me more because I know just enough to be dangerous.
Any pointers would be helpful
Thanks
golferstan

Easiest way to stream iTunes is with an Airport Express or Apple TV - but there are plenty of other ways. If you want to stream anything other than Airtunes you'll need a program like Airfoil.
Rogue Amoeba | Airfoil | Select Your Operating System

If you get airfoil and have an iOS device - you could use that as the receiver as well with Airfoil Speakers touch.
Rogue Amoeba | Airfoil Speakers Touch: Receive audio from Airfoil on your iPhone, iPod Touch, & iPad