Sara, I think I've figured out why you didn't get a helpful response from your original support e-mail. Emily responded? We don't have any Emily working with us! Are you absolutely certain that you sent the e-mail to supp...@blip.tv? Not .com or .fm? It is good to use the form at <http://blip.tv/help/>, because not only is it certain to avoid the unhelpful Emily, but it also gives us information about your set up which can help us diagnose problems.
We do test on Internet Explorer versions 6 & 7. If something is screwy, we'd be very interested in the details so we can try to reproduce it. Thanks again, Rupert, for your help!