I just built a really great front end with my Oppo 105.
4TB SSD -> Oppo USB port
IPad -> Home WiFi
Wifi to Ethernet Bridge -> Oppo Ethernet Port
It's basically an IPod on Super Steroids. 4TB worth of music playable through an IPod like interface on the IPad, but with no music on the IPad itself. IPad is basically a remote with volume control on it and thousands of CD's accessible at my fingertips..