I see, going through the ATV I will loose the benefits of playing a FLAC vs an MP3 more or less, it will need to find a different solution but it kinda bothers me to have to attach a laptop to the preamp, will have to find a way how to go directly into a DAC without to use a computer but I see it hard, I don't want to make things more complicated, actually the computer seems the less complicated, at this moment in time I run VOX on a laptop and go directly into a line level input on the preamp, could use an USB input on the future to come DAC but the problem remains the same, maybe one day I will get a recent Mini and use the TV as a screen and use it to play both FLAC and movies locally, quite expensive vs other solutions...
Thanks everybody for the suggestions