ISD4004 programming

I have been trying to get the ISD4004 to work with the Arduino. I have already read this forum about programming the ISD4004 however, it was not much help.

Right now I am not sure what is even wrong with my system. Could it be I am using the wrong SPI settings or something along those lines? My goal now is to get an Overflow or End of Message interrupt from the ISD4004 since then I would know that it is at least receiving commands.

Link to revised ISD4004 datasheet

Walkman_project.ino (6.25 KB)