aMTP32M - help with bit clock

Using Arduino Audio
4

You've lost me a bit with the Serial.println.

And this:

if(i==2){
  b = B00000010;  
}

Binary is just another way of looking at a number. You may as well have written:

if(i==2){
  b = 2;  
}

You can see that doesn't achieve much, right?

You are confusing a number of things here. I suggest you read this for a start:

Then post a link to this device. If you are still confused we can talk then. Hint: you don't want to do Serial.println. You are swapping from SPI to async serial. They are different things.