Leon,
If you just want to store the tracks as backup, then I would just copy them out of the MATRIX folder on the SD card manually, and put them somewhere safe on your harddrive. You can copy them back in the same way. Just make sure, when you do, that you pay attention to the numbering of the files.
I would have thought there would be a PC utility that can handle the iTrack files. Perhaps Greg will chime in?
matt