I agree that with a good digital cable, a good DAC, and a good jitter-reduction device, a jukebox with a halfway decent transport and coax digital out will sound pretty damn good and will probably make you feel that you're not missing much at all. Each one of these pieces will significantly affect the sound you get, so you'll have to do some demo time to find the right cable, DAC, and jitter device combo, but it'll be worth it. If it were me I'd look for a used EVS Millennium DAC(I or II, with the II you might not need jitter device), an Apogee Wyde Eye digital cable, and a Monarchy jitter unit. With more cash I'd probably still stay with the EVS DAC but upgrade to an Acoustic Zen or Zcable interconnect and an Assemblage jitter unit if you can still find one. Best of luck.
Tim
Tim