Sox is an alternative syntax for XML. It looks like a more XMLish, more Pythonic version of YAML.
Perhaps XML isn't the universal syntax after all.
The classic argument for XML is to replace all of the multiflavored text files in /etc with various different, "intuitive" XML vocabularies. That idea is such a non-starter it's not funny. Perhaps what's necessary is a single, unified syntax for all of those files -- something that is most emphatically not XML, but brings some of the expected benefits in a more user (er, sysadmin) friendly manner.