What is the ideal way to get audio from a Mac Mini music server?

[hifitodd]

Hi there,

We have our media here at AudioFlea on a Mac Mini music server running JRiver Media Center.

I currently have the Mac Mini hooked up to our  Devialet 200 via USB currently.  

I've read though that streaming to the Devialet sounds even better than USB?!?!

What is the ideal way to get the best sounding audio from a media server?  WiFi?  Ethernet?  USB?  Something else?

Thanks!

-Todd @ AudioFlea