Simple question. I see that the fio can be programmed using ActionScript 3, Ruby and Processing. I would assume (especially since Processing is in the list) that the regular old Arduino IDE would be compatible? I know it seems like a goofy question, but it doesn't actually say that anywhere that I have seen...
Processing is only used for the GUI of the IDE. The stuff that goes on the Arduino is in principle C or C++ code with a few simplifications compiled with AVR-GCC and transferred with AVR-Dude.
So if you're interested to write your code in one of the languages mentioned above, you're out of luck.
However there are samples how to control an Arduino from those languages. On the Arduino itself runs a controller software (ie Firmata) which will handle requests from the PC client.
Korman
That brings things into focus. I never realized the relationship between the 'arduino' software and AVR-Dude and AVR-GCC... learned something new today.
Anyway, so I can program it using C/C++ Thanks.