How was this embedded SWF created? Is it a SWF from another Captivate project?
No it is created in other software (Code baby).
Then my guess is that the SWF is created as a Flash symbol, which means the workings are usually going to be one level down below where Captivate's playbar can have any effect on it. You'd need to approach Code Baby's technical support people about whether this is the case.