In addition to the above Ayre link, Audioquest publishes an excellent computer audio setup guide that is a quick and valuable tool to help you get your computer and your stereo system on speaking terms. It is specifically written to get iTunes working, be it in an Apple or Windows world. It includes several screen shots to help you find the right settings. Please see this link:
http://www.audioquest.com/pdfs/CA-Setup-Guide.pdf
This link is very similar to the Ayre link so I suggest you check both web sites to ensure your Mac settings are correct. I use to have a MAC Book Pro Computer connected to my Bricasti M1 DAC and it worked fine. I recently replaced the MAC with an Aurender N10 Music Server.
Please verify the input selection source on your Bricasti DAC matches the output cable you are using. Based on the above, I believe you are using an USB connection so please confirm this is the input selection selected on the Bricasti. I also suggest you turn the Bricasti DAC on before you turn on the Mac Book computer. Please keep us posted.
http://www.audioquest.com/pdfs/CA-Setup-Guide.pdf
This link is very similar to the Ayre link so I suggest you check both web sites to ensure your Mac settings are correct. I use to have a MAC Book Pro Computer connected to my Bricasti M1 DAC and it worked fine. I recently replaced the MAC with an Aurender N10 Music Server.
Please verify the input selection source on your Bricasti DAC matches the output cable you are using. Based on the above, I believe you are using an USB connection so please confirm this is the input selection selected on the Bricasti. I also suggest you turn the Bricasti DAC on before you turn on the Mac Book computer. Please keep us posted.