macmini spdif out vs. usb

This forum seems like the place to ask this question: What is the best combination of outputs/cables/inputs to go from a MacBook Pro to a CD player with coax and optical digital inputs? I'm currently using a Van den Hul cable that is a miniplug at one end (plugging into the MacBook), and Toslink at the other (plugging into the digital inputs to my MF Tri-Vista SACD/CD player). Is there some better way (i.e., better sounding) of connecting the computer to the Tri-Vista? Is there a cable that is USB on one end and coax or Toslink on the other than would give better sound than mini to Toslink?

Marco,
Thank you very much for the very informative reply. I don't know if I was the only one helped by your response, but you certainly helped me. I will begin researching what is the most cost effective way of converting a USB signal to SPDIF. Given my level of involvement in this hobby, I'm afraid I know which end of the cost scale I'll end up at! Thanks again for your help.

Kana813,
I'm actually quite impressed with the sound quality of the current set-up (Mac->optical cable->MF Tri-Vista), and find it sounds as good (some listeners I've had over say "better than")as playing a CD using the Tri-vista as both transport and DAC. However, as a card carrying member of the audiophile community, I'm always interested incremental improvements in sound quality. In my case, I would add "Cost effective" to that search. That is why I was hoping for a relatively inexpensive cable solution to improving the sound quality. I'm not going to spend a thousand dollars on this unless it makes a discernable improvement over the current set-up. Howver, if I can do a lot better than I am now with a relatively small investment, I'll do it. I would like to try it out before making the investment though.