Hi. My question is regarding types of coax that can be used to carry digital audio signals.?

Basically I am building a new house and am setting up 2 audio systems for 2 locations within the house. I want to try and make use of digital audio outs from my computer and some other sources so I am runnig cables to suit. The distances aren't great probably 10 to 20 metres. It doesn't seem possible and certainly not economical to buy ready made digital audio coax cables to suit.
I actually work in the surveillance industry and use alot of RG59bu coax cable for video signals. It is more flexible than the standard RG6 used for TV transmission. Can I just use this cable and fit gold plated RCA connectors at each end? It is 75 ohm, which seems to be listed on all the specs for ready made cables. Or is there a specific type I must use? Also are those distances an issue? I would appreciate some advice. Thanks