My current music server consists of a 1TB external usb hard drive hooked up to my wireless router. I have mapped the network drive to my main desktop pc and to my laptop. I use Windows Media Player to organize my digital files. These feed a stereo system in my family room with an analog cable directly from the soundcard.
I have another stereo system in my man-cave which is too far away from the router. I use my laptop to access the files on the network drive via wifi and use the output jack on its internal soundcard to feed the stereo. This is not the most ideal way as the soundcard on the laptop is pretty average and I have to run a long cable to the receiver. I have read about Chromecast Audio, Muzo Cobblestone and others. Would they have the ability to access the files on my network drive?