ghradil

Hello, I am just getting into CA, I have always been a vinyl lover. I am running a glass toslink from a macbook running snow leopard to a alpha DAC. I am using the demo of puremusic. I can not get the sample rate higher than 96 KHz, even thought itunes indicates the file is 174 KHz. Midi setup does not offer a higher rate than 96. When I play HRx sample tracks the alpha dac is indicating a lock at 96. Please help. George