So far I have communication with the SI4320 through SPI, still haven't managed to listen in on the transmitter.  

Pin Out is as follows:

SI4320-------------------------------------------Arduino

1 (SDI) ---------------------------------------------- D11

2 (SCK) -------------------------------------------- D13

3 (nSEL) ------------------------------------------- D10

4 (SDO) ------------------------------------------- D12

6 (floating input when using FIFO)-------- D8 (used to tie it down)

11 (VSS) ------------------------------------------- Ground

14 (VDD) ----------------------------------------- +5vdc (2.2-5.4VDC)