"Apple makes an airport device that apparently can act as a DAC, but I have no idea how good it is. My sense so far (after several attempts to find anyone at Apple who is knowledgeable) is that Apple doesn't care much about this stuff. Seems kind of short-sighted."
12-18-08: Twilightround
That is not true................ actually, Apple cares more about quality audio then others in the computer industry.
Back to your originally posted question.
USB DAC with upcoming Mac Mini and handy-dandy Apple remote control would satisfy even the most discriminating audiophile.
The question is:
which component(s) best suit your needs?
- DAC choice (to match your preferences, taste & budget)
- Source: PC, Mac (MacBook/Air/Mini/iPod-iWadia transporter), Sonos etc.
The easiest approach that represents the best value vs performance would be
Mac Mini (new Mini is about to hit the streets) and quality USB DAC.
Two ways to navigate your iTunes library:
1) via Apple remote control ($29)
2) via iPod Touch ($229 and up)
Both remotes work flawlessly. iPod touch gives you more control tho.
Good luck with your quest........whatever you end up choosing.
Mariusz