Flash Accessibility
This is an article stub on making Flash accessible.
Some topics:
Controlling Read order for screen readers
Using the Silent property instead of hide and show
Integrating captions in flash video interfaces
WGBH has created CC for Flash and has an accessible Flash Video and MP3 player available for download. They also offer the sourcecode for the player as a .fla file.
Links: http://www.webaim.org/techniques/flash/