I'm in a similar situation... I have a new Macbook Pro and the DAC from my Audio Aero Capitol with SPDIF inputs. I'm leaning towards getting the Halide Design USB-SPDIF Bridge ($450) along with Pure Music software that works with I-Tunes($129). I have not pulled the trigger yet, but like the idea of the Halide Bridge because it's a USB/SPDIF convertor and a digital cable all-in-one... so no extra digital cable is required, unlike most other SPDIF convertors.
Would appreciate input from users of the Halide Bridge.
Would appreciate input from users of the Halide Bridge.