I have digital A/V receiver that has Sirius/XM on it. However I choose not to pay for music via satellite or internet. I also have a SONOS.
http://www.sonos.com/shop/products/connectA bridge connects to your wireless router and the Zone player connects to your A/V receiver. You can than play internet radio on your stereo whether FREE, like Pandora or pay services like XM, if you don't already have it on your A/V.