Because a working example is often way more useful than an elaborate explanation, I've grouped a couple of example pages, files and scripts here that may help you to understand certain much-asked-for functionalities of the Flash players:
Using the setup wizard, you can quickly customize the Flash players. Just pick an example, and tweak all optional flashvars.
Here are also some examples of the XML files the players accept, both playlists and captions:
Naomi Spirit has written two output scripts for Subtitle Workshop for W3C's TT format. The first one just sets the "duration" element to ten seconds. The second one can be fed through an ASP script for inserting the correct duration data. Thanks Naomi!
An here's a couple of example PHP scripts that might come in handy:
Finally, this collection of extras also includes the readme file for the Flash players and Image Rotator. It's the most comprehensive source of information and it is regularly updated.