Thanks Eric. To be clear the problem only appears within the admin of PowerCMS. I do not have a problem within the Adobe Spry accordion, or on a typical web page. The problem is probably moot anyway, as far as PowerCMS is concerned, as the video can only be added using code via the PowerCMS source view anyway, and most clients would not be capable of that level of complexity. I think the simplest solution is to not include the video within a defined content area. To add/edit movies they will just have to call me.
Robert