Music server install: internet over electric lines

Hi group,
I want to set up a Marantz NA7004 network audio player with my 2 channel system; my plan was to have my cable company run an internet line to my system's location, but today the tech said, given my home's layout, that wasn't possible.

He suggested a device by Asoka, called "PlugLink," which carries internet over your existing power lines.

Has anyone done this? I wanted a dedicated hard line to improve audio quality; I'm worried about noise from current affecting the signal to the player.

The other option is Marantz has a wireless "airplay" unit which could stream music to the NA7004.

Thanks in advance for your advice,
Jeff