Given a little thought I decided that using names instead of strictly URLs would be easier for people to deal with, and would give us an easily definable location that the repo mirror would place its package list. For that reason I have changed the .mule file format to a set of key-value pairings where the key is the name of the repo mirror (also coincidently the final string of the url -- example: http://www.example.com/some/repo/path/here would have the name of 'here') and the value is the URL.