I having an issue with the I2S enabling for the HiFiBerry DAC, I2S is on, but the PI is not sending it to the DAC, the little green light isn't coming on. I'm using Volumio 2, I also have a Rpi 2 model B, and the DAC works perfect on it. I've tried factory reset and turning the I2S off and on, but nothing seems to work. I've read that it could be conflict with the Bluetooth chipset on the 3. Any suggestions?