I have a mac mini unibody and I think I would like to use windows 7 to enable automatic switching of the word length and sample rate. Will this work? I don't really want to use amarro or pure music I'm just looking for the easiest way to play music. Also does the DAC 1 usb convert the usb input to spdif or I2s to the dac chip less processing the better! Anyone know the answer please?