Something where from home devices and PC family can un-select our internet provider wifi (comcast or WOW) and select a router (athome) which will have all our music and movies on it and back up files.
I want to keep the home network offline, but act as a server to play and select "Christmas theme music" for the surround sound in the kitchen for the wife, while the kids can select and play movies from there TVs.
Also that I will be adding more music and movies and stuff.
Anyone have any suggestions or I will have to build the Apache sever and website myself

Many time internet may go out, and I want to still run entertainment from my own 2nd wifi intranet that can be selected.