Copied from http://www.raydees.com/Weather_Radio.html and modified so it works with the SparkFun Si4707 module. (Requred a change of the I2C addresss of the chip.)
I was using the Sparkfun version but it was a pain in the ******!!
The new radio is from http://www.aiwindustries.com/ and I can tell you it is much easier to work with.
It has a built-in BNC connector for an antenna tuned to the Weather Band and no pesky voltage dividers on the VIO pins (come on Sparkfun :{P).
It needs a level shifter if you intend to use a 5v uC but one of those can be had from https://www.adafruit.com/.
I2C Level Shifter from Adafruit (Enables use with 5V Microcontrollers)
Audio Amplifier module from Modern Devices