Apogee Big Ben for Jitter reduction

Apogee makes a DAC that takes a feed from the USB port on the G4. Is it possible to use the Big Ben after the DAC or does it have to come before?

I am considering an Apogee Mini-Dac -- AND -- wondering about combining it with a Big Ben -- for playback of AIFF files from my computer. How are you using your Big Ben?

Isn't the lens and the Big Ben redundant? I just read up on the lens -- interesting product. But, don't you need to feed the signal from the lens to a DAC? Or, the signal from the Big Ben to a DAC? The Slimdevices Squeezebox in another interesting piece of gear -- just read up on that, too. Lots of great info -- thanks! Is there a way to feed a digital signal from my G4 Powerbook directly to the Lens? Do you use a DAC? You've got me excited at the prospect of turning my computer's hard drive into the transport for playback that can sound close to the Wadia. Is the squeezebox a necessary part of the chain?

Thanks for all the food for thought!