As far as i can see from the schematics the following pins are Chip Select:
Pin 10: W5100 (Ethernet chip)
Pin 9: SD
Pin 6: MP3
So before i do anything else i disable the MP3 decoder chip and W5100 chip by using:
pinMode(10, OUTPUT);
digitalWrite(10, HIGH);
pinMode(6, OUTPUT);
digitalWrite(6, HIGH);
Do i have my Pin mappings wrong?