So, you are a PHP person and put together some PHP sites for you or your customers and don't use a CMS such as PostNuke, you just code some pages to do what you need. AutoTheme runs by itself, yet allows you to "include" it and use all of the AutoTheme themes available!
Also, it is easily used as an HTML Theme System for other PHP applications that you may have acquired/downloaded. Just add some include statements to the header and footer files and you're using AutoTheme and the thousnads of themes that have been designed for AutoTheme.
I can release it at this moment, but am soliciting feedback to see who would want it and what the applications would be. Post a comment and let me know!