An Apple Airport Express (AE) is the best solution. You can transmit a wireless signal from the PC to your stereo so no need to run wires. There is a a $39 remote that works through the AE to control the music from your listening room.
The Airport Express has a digital optical jack so you can use the DAC in your Cary. The sound quality is absolutely amazing.
You will need the Airport Express, iTunes software, the remote. If you don't have a wireless network, you will also need a card for your PC. The AE comes with a digital cable which I hear is OK but you may want to upgrade to a used cable for $70 - $90.
I use this set-up, check my system for details. I do not have an optical input on my CDP so I had to add a converter into the mix. I got a Monarchy DIP for $200 and it is a great solution although there are other less expensive converters you can use.