You might check CRXcommunity for a solution. There's actually quite a bit that comes up when I search for MPGuino.
I wish I could help you, but life keeps throwing stuff in my way! I haven't had a chance to do anything with my MPGuino yet! And this weekend is shot too! I work all day tomorrow, and Sunday I'm driving my parents to the Seattle airport. So I'm staying in town, with my parents, Saturday. All with little RAVadoodle.
I'm really chomping on the bit to get going on this project!