Added UI for setting midi channels, added global master volume kill, and some tuning changes
First pass work to get I2C working.  Sort of works but if any node falls off the whole bus goes down and takes the master node with it.  Also, I haven't tested if XBee still works.  In theory it should with one flip of a config bit.
Adding new arduino format files
Removing old files
Tried new I2C library
New RS-485 version of the node
Lots of improvements.  Added tuning for all nodes, RS-485 support, fancy text boxes, etc