New version (3.0) is now available from my website!
This version will automatically install the zip component if you do not have it, and you've checked the zip option. This version knows (instead of guessing) your MDB and INI location! It also runs as a background process which means you can backup without your music going blocky.
The main new feature is the option to automatically backup each time you start MM. This is useful for lazy people like me who forget to run it manually!