You can have N.RADIO without any problems - if you were using i-devices and AirPlay?
Don't forget you can also use a Windows laptop (or Mac, of course), with Airfoil, to send any audio to the Playmaker, as an Airplay device.
I've just connected a Playmaker to our BL3s in the office and it's possible to stream radio or any content to them, via Airfoil. http://www.rogueamoeba.com/airfoil/
On a sidenote, the Playmaker looks grubby after a few days in the office! 😉