: it certainly is. I can't help you with installer, because last time I tried to make my own, I was unsuccessful and it just didn't work. But if you want to try it for yourself, search for "Kindletool"
Of course, you can use any other way of installation, for example over script is easy. If you have RUNME hack installed, I think, that renaming of kite install script to RUNME.sh and putting script to Kindle should work, but better do backup of main partition first.
try this (with proper filenames with full path):
kinamp file file1 file2 file3