Hi ArcEye,
I just found your awesome post for a key changer. I'm very interested to try it as I'm in the same spot as others before me. As I have a fresh install of Debian Wheezy it gives me this error:
cnc@LinuxCNC:~$ sudo apt-get install libqt3-mt
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package libqt3-mt is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package 'libqt3-mt' has no installation candidate
Any ideas? Thanks for looking.