Connections question: Macmini/Emotiva DAC; AIFF Artwork & Logitech Squeezebox Touch

[acarroll123]

A couple of general questions for anyone to assist with. I'm just getting into computer audiophile, so all help is greatly appreciated. I would like to know the best cable connection from a Macmini to Emotiva XDA-1 DAC. The Macmini is on one side of the room and the DAC on the other (they are approx. 30feet from each other). Additionally, I've just connected a Logitech Squeezebox Touch in another room, and after setting up several times, have noticed that some of the artwork for music does not appear on the squeezebox screen. Most of the artwork (cd cover art) was scanned, sized and cleaned up in Photoshop, then placed via "drag and drop" after music was imported into iTunes. Any information/suggestions on either of these issues will be greatly appreciated.

Thanks