FSK TX is a shipping example, but RX is not included. Here is a quick example (direct conversion of an RFSA Modulation Toolkit Example) that receives a FSK signal, decodes the bitstream and displays the eye diagram. Currently this VI analyzes finite bursts of data and then performs the demodulation (it is not continuous). It could be optimized for continuous operation if some of the visualizations and analysis tailored to the specific application.
NI USRP drivers and Modulation Toolkit are required for this example. It was written and tested in LabVIEW 2012.
Another tip, be sure to select correct antenna ports.