Unbiased answer: Yes, definitiely.
Totally biased input: I've got a Digital PClink I could sell you if you're interested. The PClink is an external USB "soundcard" that is powered from the USB bus and provides digital coax and optical output. Works at both 16bit and 24bit. Mine looks pretty much like this, though the graphics and website links are a bit different:
I used mine with my Dell pc to provide a digital 16/24 bit feed to a DAC for my office playback system. I've just replaced my Dell with an iMac. The PClink worked perfectly with my Mac as well, but the iMac has an optical digital output, so I'm going to skip the PClink and just go straight to my DAC via the optical.
If you're interested, I'd take $20 including priority mail shipping and paypal fees (for the PClink and USB cable). LMK