I'll be the first to admit that I never thought something like a power cable (or dedicated wiring) could make such a difference but to me it does. Logically an ethernet cable shouldn't make any difference but I've never tried an expensive one. Knowing something about networking computers there is no real logic for an upgraded cable other than better throughput. Your internet connection speed is a limiting factor on streaming audio.
That being said if you had an internal network with a music server for example the increased speed/throughput could make a difference but again I have no experience with a music server.
That being said if you had an internal network with a music server for example the increased speed/throughput could make a difference but again I have no experience with a music server.