Require someone to build us a Flowplayer custom controlbar in SWF (not HTML/JS).
I've attached a mockup of exactly how we want this thing to look (the mockup doesn't contain a volume control, this is incorrect).
The end result should come in the form of source code and a compiled SWF.
Simplicity Media Ltd are a fully registered and reputable company - look on Google and you'll find lots of stuff we have done / been involved in). For your protection, feel free to provide us only with the compiled SWF (maybe with some sort of security marker on there??), until full payment is received.