If you want to continue to use the DCC2 as a DAC, then for the very best possible sound, consider something like this:
http://www.empiricalaudio.com/frComputer_Audio.html#USB%20Off-Ramp
The HagUSB is quite a bit cheaper, but the Empirical Audio product is a premium product. I have not personally auditioned either.
http://www.empiricalaudio.com/frComputer_Audio.html#USB%20Off-Ramp
The HagUSB is quite a bit cheaper, but the Empirical Audio product is a premium product. I have not personally auditioned either.