I also have a Piccolo DAC. Mine has a mini Toslink digital optical jack for its input and a mini stereo jack for its analog audio output. I've read that AOS is going to be building Piccolo's with coaxial digital jacks for its input and an RCA pair of jacks for its stereo analog audio output. I have a couple of questions for you about your Piccolo before recommending cables:
1) Are you taking digital output from your sound card and inputting that into your Piccolo, or are you taking the analog audio output of your DAC and inputting that into your soundcard? From your post I couldn't tell in what sense you are trying to connect the sound card and the DAC.
2) Describing the connectors on DAC and soundcard as "mini connectors" is not enough information. Are they mini Toslink optical jacks, or mini stereo analog audio jacks, or RCA digital coaxial jacks, etc? The more descriptive you are, the more we can help you.
For Optical digital cables, I highly recommend Sonicwave Glass Toslink cables, which I buy at:
http://www.av-cables.net/digitalaudi...o-toslink.html ($35 for 1m, $45 for 2m, $51 for 3m). You can also get Toslink mini adapters on the same site for adapting the Toslink cable ends to mini Toslink jacks, such as I have on my Piccolo.
For Coaxial digital cables, I've tried and am very happy with, the Dayton Coaxial Digital Cable available at
www.partsexpress.com ($7.70 3ft, $8.80 6ft, $11.70 12ft).
For analog audio cables, I'm very happy with the CPU Series cables at
www.headphile.com ( $40 for 1m Copper, $50 for 1m Silver )
When you answer the questions above, we can let you know more specifically about the cables and adapters you'll need.