computer to preamp?

where do you buy the toslink connection, the regular tosolink connector is too big, i think it use a mini jack.
on the i tune, there are different way to rip the cd, wave, apple, acc ? which way has the best result?

You can get a toslink cable that comes with a mini adapter. They are easily found.

Squeezebox3

www.slimdevices.com

I believe this is a very solid alternative to Airport Express. Had analog and digital outs as well as 24-bit on-board DACs. Available wireless or Ethernet, well built. Imo the SB sounds incredible and has a very impressive functionality.

A low-end, but decent sounding and fairly simple alternative is the RCA Lyra wireless (a USB-based wireless setup with stereo analog outs) can be had for under $40.