On a freshly jailbroken phone, the problem persists, this does not have anything to do with "rogue" sources, and this is without the installation of SafariDL plugin or anything. This is immediately following a vanilla QuickPwn with only community sources.

On a non-jailbroken iPhone or Touch they will play
On a freshly jailbroken iPhone or iPod Touch they will not play

I'm using the standard formatting from the Quicktime Export, standard references to ac_quicktime.js, qtp_library.js and qtp_library.css

If anyone can help, that would really help me and probably a lot of other web designers to reach the full spectrum of our intended audience.

(I cannot provide a link, because it is on my local host right now)