I'm working on a project for a band that wants to be able to update the music on their website similar to the way that SlideShow Pro Director works, with music instead of pictures.
I think it would pretty much depend on your coding. If you are using external data (XML, PHP/MySQL, Flat Text, etc) to load your list of music files (MP3?) it would allow them to alter/change the list at any time without having to recompile a new SWF by simply uploading the new music and adding it to whatever you use to store the list of existing music files.