This program is free and written by Warren S. Goff, D.O., FCCP.   
Any comments may be addressed to sgoff1@tampabay.rr.com.
The utility of Tunings is as the name states to allow instantaneous Alternative Guitar Tunings.
There are a large variety of built in common tunings. Simply select one and it defaults to channels 1-6.
You may tune the strings any way you'd like simply by changing the numbers underneath the channels.
Your MIDI Guitar should be set to MONO mode transmitting 1 string per channel. 
The higher pitch string corresponds to 1 and the lower to 6.
You may change the default General Midi Voices to all the strings at once. 
If you click above the individual channel, you can choose a different instrument per string.
MIDI input and MIDI output can be assigned as well.
Volume changes are supported as well as panning.
You may transpose the sound in a range of 72 half-steps.   Therefore the capo may be placed anywhere from -36 to + 36 frets.
You may record to any file as long as you input a name.   The default is "Untitled.mid".
If you click on the filename box a directory window will open and you may save as any file and to any directory.
The file will be saved to the application directory as a default.   
The file will be overwritten automatically without warning, unless you change the name.   
You may play the current recording.
You may play any midi file on disk.
I think there is a potential for expansion and improvement in this program.   I will consider working on it and improving it if there is an interest.   At that point we might consider $.
I highly recommend the program "Nut Chords" 32 by Saami Saarnio (http://www.helsinki.fi/~saarnio/).   I copied many of the tunings from him.   That program also show every imaginable chord and scale in each tuning.