Theres a device limit on TWI busses that you could conceivably hit after say ~20-30 devices. This module removes all the capacitance from behind it. Utilized in the Tactor Strip implementation.
Send gerber directory to your favorite PCB house to get your own boards. Try www.oshpark.com for great quality cheap low quantity US boards with quick turn around time.
Utilize SCH and BRD file in Eagle 5 to take a look at the board, make changes, and generate your own gerbers. Sorry, transition to Eagle 6 soon probably.
Utilize BOM file to order parts (Part Numbers included for digikey) to build your own or fix existing.
No programming needed.