Hi there! 8)
Now you can use your Arduino to connect to the DOLLx8 embedded network. DOLLx8 stands for Digital One Line Link and there is now a crowd funding on Idiegogo for the new Q-SAMA Optimal I, a 4x4 channel audio system with Wi-Fi, I/O ports and a lot of functions. The project involves Arduino as well, so check out the videos on http://www.igg.me/at/q-sama/ Thanks!