What version of Flowplayer are you using? Can you post a link to your site?
Can you tell us if the Hustler Cash videos are mp4? Are the other sponsor videos flv?
Just checked mine and it looks like Hustler Cash uses flv videos. But can you verify?
Fap Burn - Fap until in Hurts to Random Videos Cassie Courtland Licks Lystra Faith On A Car