Coaxial Cable - Use Cheap Phono Instead?

[kolax]

I'm looking to hook my Sky box up to my home cinema by coaxial. Unfortunately, I've only got 2 optical inputs on the receiver, which are both in use. I'm not after amazing sound quality, after it, it'll be for watching normal day to day TV programs.

I also don't want to spend £20 on a cable that won't sound significantly better than a cheap phono cable.

I currently have my Apple TV plugged in via component, and I'm using cheap Red/White phono cables, and everything is great. I didn't notice any reduction in video quality when going from HDMI to my cheap component way.

I don't own any spare phono cables, and all my cables that are in use are tied up/hidden away. So before I buy one, is there any reason this would be a bad idea? I've never dealt with coaxial digital audio before.

http://www.maplin.co.uk/phono-plug-to-plug-lead-1019?ordercode=L01BA Is what I'd likely buy.

 

[mchalebk]

The handful of times I've hooked up coaxial digital audio signals, I've used whatever rca cable I had handy and never had a problem. There won't be any quality issues (it's digital). The worst case, if you had a really poor cable, is that you might get dropouts.