How can I transmit an FLV video to a browser?

Hi folks,

Silly question but is there a guide that
can walk me through the basics of
sending an FLV to a browser?

For instance:

1. Is there a free swf that I can use to play
the FLV, or at least Actionscript source (.as file)
compatible with Motion-Twin's compiler?

2. Is the swf's request typically a regular HTTP
request?

3. How could I control the rate at which
I send the FLV data to the browser?

4. Lastly, if I don't mind skipping
on the FLV bandwagon, is there
a free equivalent Silverlight server-side
PHP class to send a video?

Thanks.