Re: web site question…
Joomla would be able to do that… its free too.
Or pay some money for **Article Manager **
With any CMS, you would need to recreate the category structure.
www.domain.com/poetry/artistA/clipname2.html
www.domain.com/poetry/artistB/clipname2.html
Article Manager can automatically create directories in your hosting as you create the categories in administration area. It would store the information in mySQL database plus static file (html/php/asp/whatever) for faster access and SEO?