An automated iTunes?
For a start, you could look at ControlPlane to trigger iTunes when you come home.

from http://www.controlplaneapp.com/about/ :


  ControlPlane allows you to build configuration profiles, contexts in ControlPlane lingo, for your Mac based on where you are or what you are doing.  ControlPlane determines where you are or what you are doing based on a number of available evidence sources and then automatically reconfigures your Mac based on your preferences.  Evidence sources can include your current location, visible WiFi networks, attached USB devices, running applications and more.